Umbilical cord cutting and clamping device

• US 5,913,862 A
• Filed: 04/25/1997
• Issued: 06/22/1999
• Est. Priority Date: 04/25/1997
• Status: Expired due to Fees

• Current Assignee: Plambeck Gregg E, Ramsey James
• Original Assignee: Gregg E. Plambeck, James Ramsey
• Inventors: Ramsey, James, Suarez, Fernando, Plambeck, Gregg E.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Koo, Benjamin K.
• Application Number:
  US08/846,074
• Time in Patent Office: 788 Days
• Field of Search: 606/120, 606/1, 606/119, 606/138, 606/139, 606/142, 606/151, 606/157, 606/167, 606/205, 606/207, 606/208
• US Class Current: 606/120
• CPC Class Codes: A61B 17/122 Clamps or clips , e.g. for the umbilical cord for the vas deferens A61F6/206
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133

Abstract

An umbilical cord cutting and clamping device includes two clamps abutted in a side-by-side relation and a blade connected to an arm of one of the clamps and positioned between the two clamps. Both clamps have an upper arm and a lower arm, and a hinge coupling the proximal ends of the upper and lower arms. The clamps are held in relative position by frictional engagement and by a latch means which is automatically disengaged when the clamps are moved into a closed position. Both the upper and lower arms include clamping surfaces for clamping the umbilical cord. The proximal end of one of the clamping surfaces is provide with a retention tab which retains the umbilical cord between the clamping surfaces; i.e., the tab prevents the cord from migrating proximally off the clamping surfaces and into the hinge area. The distal portions of the lower arms of the clamps include substantially vertical portions having ratchet surfaces having a plurality of proximally directed teeth which are engaged by a ratchet engagement means at the distal ends of the upper arms. The blade includes a cutting edge which is preferably angled distally downward relative to the upper arms. As the clamps are closed around a section of umbilical cord and clamp the cord, the blade extends between the clamping surfaces and cuts the cord, and the latch means is disengaged. The two clamps are separated from their friction fit while clamping the severed ends of the cord.

Claims

1. An umbilical cord cutting and clamping device, comprising:

a) a first clamp having a first upper arm and a first lower arm;

b) a second clamp having a second upper arm and a second lower arm;

c) a latch means oriented perpendicular to said first lower arm and said second lower arm for laterally disengageably coupling said first clamp to said second clamp in a side-by-side relation, said latch means including interengaging elements on said first and second clamps, at least one of said interengaging elements being resilient, said latch means automatically disengaging said first clamp from said second clamp when said cutting and clamping device is moved substantially towards a closed position; and

d) a blade coupled to one of said first clamp and said second clamp.

2. An umbilical cord cutting and clamping device according to claim 1, wherein:

said first lower arm and said second lower arm include first and second distal portions, respectively, and movement of said first distal portion distally relative to said second distal portion causes said latch means to automatically disengage said first clamp from said second clamp.

3. An umbilical cord cutting and clamping device according to claim 2, wherein:

said latch means includes a latch on said first distal portion, said latch being provided with a barb, and a catch means on said second distal portion for receiving said latch.

4. An umbilical cord cutting and clamping device according to claim 3, wherein:

said catch means include a latch entry which receives said barb, an entry surface which guides said barb, and a shoulder which retains said barb, said latch being biased such that said barb, once inserted into said latch entry, seats against said shoulder, and such that moving said first distal portion distally relative to said second distal portion releases said barb from said shoulder.

5. An umbilical cord cutting and clamping device according to claim 1, wherein:

said first clamp includes locking means to lock said first upper arm relative to said first lower arm when said cutting and clamping device is in the closed position such that said first clamp is in a locked position.

6. An umbilical cord cutting and clamping device according to claim 5, wherein:

said locking means is a ratchet on said first lower arm and a ratchet engaging means on said first upper arm.

7. An umbilical cord cutting and clamping device according to claim 5, wherein:

said first clamp includes a releasing means for releasing said locking means.

8. An umbilical cord cutting and clamping device according to claim 7, wherein:

said releasing means is a tab.

9. An umbilical cord cutting and clamping device according to claim 1, wherein:

said first upper arm includes an alignment tab and said first lower arm at least partially defines a groove which receives said alignment tab.

10. An umbilical cord cutting and clamping device according to claim 1, wherein:

said first upper arm, said first lower arm, said second upper arm, and said second lower arm are each provided with a clamping surface,

and at least one of said first upper arm, said first lower arm, said second upper arm, and said second lower arm includes an umbilical cord retention means for preventing the cord from migrating proximally from between said clamping surfaces.

11. An umbilical cord cutting and clamping device according to claim 1, wherein:

said blade has a straight cutting edge which is angled relative to a longitudinal axis of a portion of said one of said first clamp and said second clamp to which said blade is coupled.

12. An umbilical cord cutting and clamping device, comprising:

a) a first clamp having a first upper arm and a first lower arm, said first lower arm having a first portion and a distal portion angled relative to said first portion said distal portion being provided with a ratchet having a plurality of substantially proximally directed teeth and said first upper arm having a distally directed ratchet engagement means for engaging said plurality of teeth, said plurality of proximally directed teeth including at least one upper tooth and at least one lower tooth vertically displaced below and proximally displaced relative to said at least one upper tooth;

b) a second clamp having a second upper arm and a second lower arm;

c) means for coupling said first clamp to said second clamp in a side-by-side relation; and

d) a blade coupled to one of said first clamp and said second clamp,

wherein, in a locked position, said ratchet engagement means engages at least a first of said plurality of proximally directed teeth.

13. An umbilical cord cutting and clamping device according to claim 12, wherein:

said distal portion is provided with a clamp releasing tab, wherein, in a locked position, said clamp releasing tab is engaged to move said distal portion distally relative to said ratchet engagement means and to thereby release said first clamp to an unlocked position.

14. An umbilical cord cutting and clamping device according to claim 12, wherein:

said second lower arm has a second distal portion provided with a second ratchet having a second plurality of proximally directed teeth and said second upper arm has a second distally directed ratchet engagement means for engaging said second plurality of teeth,

wherein, in a locked position, said second ratchet engagement means engages at least a first of said second plurality of proximally directed teeth.

15. An umbilical cord cutting and clamping device according to claim 12, wherein:

said first clamp includes a first hinge connecting said first upper arm to said first lower arm, and said second clamp includes a second hinge connecting said second upper arm to said second lower arm.

16. An umbilical cord cutting and clamping device according to claim 12, wherein:

said ratchet engagement means is an acutely angled distal edge portion of said first upper arm.

17. An umbilical cord cutting and clamping device according to claim 12, wherein:

said coupling means is a latch assembly operating perpendicular to said first lower arm.

18. An umbilical cord cutting and clamping device according to claim 17, wherein:

said latch assembly includes a latch on said distal portion of said first lower arm of said first clamp, said latch being provided with a barb biased to be disengageably engaged in a catch on a second distal portion of said second clamp,

wherein moving said distal portion of said first lower arm distally relative to said second distal portion releases said latch from said catch.

19. An umbilical cord cutting and clamping device according to claim 18, wherein:

said distal portion of said first lower arm includes a latch releasing means for engaging said ratchet engagement means when said clamp is in said locked position and for maintaining said distal portion of said first lower arm in a distal position relative to said ratchet engagement means such that said barb is released from said catch, enabling said first clamp to be separated from said second clamp.

20. An umbilical cord cutting and clamping device according to claim 12, wherein:

said upper arm includes an alignment tab and said lower arm is provided with a groove for receiving said alignment tab.

21. An umbilical cord cutting and clamping device according to claim 12, wherein:

said first upper arm, said first lower arm, said second upper arm, and said second lower arm are each provided with a clamping surface,

and at least one of said first upper arm, said first lower arm, said second upper arm, and said second lower arm includes an umbilical cord retaining means for preventing the cord from migrating away from said clamping surfaces.

22. An umbilical cord cutting and clamping device, comprising:

a) a first clamp having a first upper arm and a first lower arm movable relative toward said first upper arm upon closure of said cutting and clamping device;

b) a second clamp having a second upper arm and a second lower arm movable relative toward said second upper upon closure of said cutting and clamping device;

c) a latch means for laterally disengageably coupling said first clamp to said second clamp in a side-by-side relation such that said first clamp and said second clamp are fixed in three dimensions relative to each other when coupled by said latch means, said latch means including interengaging elements on said first and second clamps, at least one of said interengaging elements being resilient; and

d) a blade coupled to one of said first clamp and said second clamp.

23. An umbilical cord cutting and clamping device according to claim 22, wherein:

said first lower arm and said second lower arm include first and second distal portions, respectively, and movement of said first distal portion distally relative to said second distal portion releases said latch means such that said first clamp and said second clamp may be uncoupled from said side-by-side relation.

24. An umbilical cord cutting and clamping device according to claim 23, wherein:

said latch means includes a latch on said first distal portion, said latch being provided with a barb, and a catch means on said second distal portion for receiving said latch.

25. An umbilical cord cutting and clamping device according to claim 24, wherein:

said catch means include a latch entry which receives said barb, an entry surface which guides said barb, and a shoulder which retains said barb, said latch being biased such that said barb, once inserted into said latch entry, seats against said shoulder, and such that moving said first distal portion distally relative to said second distal portion releases said barb from said shoulder.

26. An umbilical cord cutting and clamping device according to claim 22, wherein:

said first clamp includes locking means to lock said first upper arm relative to said first lower arm such that said first clamp is in a locked position.

27. An umbilical cord cutting and clamping device according to claim 22, wherein:

said blade has a straight cutting edge which is angled relative to a longitudinal axis of a portion of said one of said first clamp and said second clamp to which said blade is coupled.

28. An umbilical cord cutting and clamping device, comprising:

a) a first clamp having a first upper arm and a first lower arm;

b) a second clamp having a second upper arm and a second lower arm;

c) a latch means for laterally disengageably coupling said first clamp to said second clamp in a side-by-side relation such that said first clamp is fixed in three dimensions relative to said second clamp when said cutting and clamping deice is in an open position, said latch means including a barbed latch on one of said first and second clamps and a catch which receives said barbed latch on the other of said first and second clamps, said latch means for further automatically disengaging said barbed latch from said catch when said cutting and clamping device is moved substantially towards a closed position; and

d) a blade coupled to one of said first clamp and said second clamp.

29. An umbilical cord cutting and clamping device, comprising:

a) a first clamp having a first upper arm and a first lower arm movable relative toward said first upper arm upon closure of said cutting and clamping device;

b) a second clamp having a second upper arm and a second lower arm movable relative toward said second upper upon closure of said cutting and clamping device;

c) a latch means for laterally disengageably coupling said first clamp to said second clamp in a side-by-side relation such that said first clamp and said second clamp are fixed in three dimensions relative to each other when coupled by said latch means, said latch means including a barbed latch on one of said first and second clamps and a catch which receives said barbed latch on the other of said first and second clamps, said latch means automatically disengaging said latch from said catch when said cutting and clamping device is moved substantially towards a closed position; and

d) a blade coupled to one of said first clamp and said second clamp.