Catheter deployment device

• US 7,229,421 B2
• Filed: 12/15/2003
• Issued: 06/12/2007
• Est. Priority Date: 12/07/2001
• Status: Expired due to Fees

• Current Assignee: Abbott Laboratories
• Original Assignee: Abbott Laboratories
• Inventors: Dolin, Jeff, George, Robert, Lasser, Amelia, Jen, Jimmy
• Primary Examiner(s): Hindenburg; Max F.
• Assistant Examiner(s): Szmal; Brian
• Application Number:
  US10/736,459
• Publication Number:
  US 20050027213A1
• Time in Patent Office: 1,275 Days
• Field of Search: 600/585, 604/585, 604/158, 604/159, 604/164, 604/165, 604/171, 604/264, 604/164.12, 604/164.13, 604/164.09, 604/164.01, 604/164.02, 604/164.06, 604/165.01, 604/505, 604/22, 604/28, 604/30, 604/31, 604/95.04, 606 12- 15
• US Class Current: 600/585
• CPC Class Codes: A61B 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/00247 Making holes in the wall of the heart, e.g. laser Myocardial revascularization
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2017/22042 Details of the tip of the guide wire
• CPC Class Codes: A61B 2017/22048 Balloons
• CPC Class Codes: A61B 2017/22069 Immobilising; Stabilising
• CPC Class Codes: A61B 2017/22077 with a part piercing the tissue A61B2017/22044 takes precedence
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing
• CPC Class Codes: A61B 2017/22095 accessing a blood vessel true lumen from the sub-intimal space
• CPC Class Codes: A61B 2017/3409 including needle or instrument drives
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61M 2025/0046 Coatings for improving slidability
• CPC Class Codes: A61M 2025/0086 the needles having bent tips, i.e. the needle distal tips are angled in relation to the longitudinal axis of the catheter
• CPC Class Codes: A61M 2025/0087 Multiple injection needles protruding laterally from the distal tip
• CPC Class Codes: A61M 2025/009 the needle having a bent tip, i.e. the needle distal tip is angled in relation to the longitudinal axis of the catheter
• CPC Class Codes: A61M 2025/0096 being laterally outward extensions or tools, e.g. hooks or fibres
• CPC Class Codes: A61M 2025/0197 for creating an artificial passage within the body, e.g. in order to go around occlusions
• CPC Class Codes: A61M 2025/09116 Design of handles or shafts or gripping surfaces thereof for manipulating guide wires
• CPC Class Codes: A61M 25/0068 : Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/0069 : Tip not integral with tube
• CPC Class Codes: A61M 25/008 : Strength or flexibility characteristics of the catheter tip
• CPC Class Codes: A61M 25/0084 : being one or more injection needles
• CPC Class Codes: A61M 25/0136 : Handles therefor
• CPC Class Codes: A61M 25/09 : Guide wires
• CPC Class Codes: A61M 25/09041 : Mechanisms for insertion of guide wires

Abstract

An apparatus for deploying a needle within a lumen is provided. The apparatus includes a housing having a threaded bushing radially disposed therein. The bushing rigidly couples with a nose cone having a guide tip disposed at an end opposite the bushing for penetrating an arterial wall of a lumen. During operation, a user incrementally advances the bushing within the housing, thereby incrementally advancing the guide tip into the lumen. The nose cone also includes a flex guide having a slot configuration which couples with the guide tip which deploys into the lumen along with the guide tip.

Claims

1. A device for advancing a guide tip associated with a catheter into a lumen, the device comprising:

a housing coupled with the catheter, the housing comprising a bushing disposed therein;

an inner key disposed within the bushing, the inner key being capable of advancing within the bushing; and

a biasing member disposed within the bushing, the biasing member aiding with advancing the inner key within the bushing to advance the guide tip into the lumen.

2. The device as recited in claim 1, wherein the biasing member and the inner key are coaxial.

3. The device as recited in claim 1, wherein the inner key is coupled to the guide tip and advancing of the inner key within the bushing advances the guide tip into the lumen.

4. The device as recited in claim 3, the device further comprising a firing mechanism cooperating with the biasing member, the firing mechanism provides for automated deployment of the guide tip into the lumen.

5. The device as recited in claim 4, wherein the firing mechanism comprises a key having at least two keyholes through which the inner key can extend, the first keyhole having a diameter smaller than the inner key to prevent decompression of the biasing member and advancement of the inner key within the bushing and the second keyhole having a diameter larger than the inner key keyhole to allow decompression of the biasing member and advancement of the inner key within the bushing.

6. The device as recited in claim 5, wherein the firing mechanism further comprises a safety pin coupled to the key such that when the safety pin is in a first position, the key is restricted from moving relative to the inner key, and when the safety pin is in a second position, the key can move relative to the inner key.

7. A device for advancing a guide tip into a lumen, the device comprising:

a housing having an actuator disposed therein;

a button operatively associated with the actuator, compression of the button incrementally advancing the actuator in the housing; and

an inner key coupled with the actuator, the inner key advancing as the actuator advances.

8. The device as recited in claim 7, wherein the guide tip advances into the lumen as the inner key and the actuator advance within the housing.

9. The device as recited in claim 7, the device further comprising at least one handle.

10. The device as recited in claim 7, the device further comprising a port to receive fluid during use of the device to minimize the presence of air and to flush out the catheter before use.

11. The device as recited in claim 7, the device further comprising a rotatable knob operatively associated with the guide tip, wherein rotation of the knob rotates the guide tip.

12. The device as recited in claim 7, the device further comprising a compressible spring operatively associated with the inner key and the actuator, the spring maintaining the inner key and the actuator in a fixed, non-deployed position when the button is in an uncompressed position.

13. The device as recited in claim 7, wherein the button and the actuator have complementing gradients.

14. The device as recited in claim 13, wherein compression of the button moves the gradients of the button into engagement with the gradients of the actuator to advance the actuator within the housing.

15. The device as recited in claim 7, wherein the device further comprises a hub assembly to selectively restrict the motion of the actuator within the housing, the hub assembly comprising:

a hub rod coupled to the housing;

a stepped hub coupled to the hub rod, the stepped hub having at least two steps disposed at varying depths with respect to one another; and

a hub stop rigidly mounted on the actuator and which engages the stepped hub when the button is compressed.

16. The device as recited in claim 15, wherein the stepped hub can be selectively rotated to allow the hub stop to engage the various steps to advance the actuator to various depths within the housing.

17. The device as recited in claim 7, the device further comprising a locking mechanism to selectively prevent movement of the actuator once the button has been compressed, the locking mechanism comprising:

a lever having a stop;

a biasing mechanism cooperating with the lever; and

at least one ratchet on the surface of the actuator, the at least one ratchet capable of engaging the stop.

18. The device as recited in claim 17, wherein the at least one ratchet allows for incremental advancement of the actuator within the housing, the incremental advancement of the actuator incrementally advancing the guide tip into the lumen.

19. The device as recited in claim 17, wherein the lever can be selectively rotated to disengage the at least one ratchet from the stop and allowing the actuator to return to a rest position.

20. The device as recited in claim 17, wherein the biasing mechanism is a compressible spring.

21. A device for advancing a guide tip into a lumen, the device comprising:

a housing coupled with the catheter, the housing comprising a bushing and an actuator disposed therein;

a button operatively associated with the actuator, compression of the button incrementally advancing the actuator in the housing;

an inner key coupled with the actuator and disposed within the bushing, the inner key advancing within the bushing as the actuator advances; and

a biasing member disposed within the bushing, the biasing member aiding with advancing the inner key within the bushing to advance the guide tip into the lumen.

22. The device as recited in claim 21, wherein the guide tip is constructed of stainless steel.

23. The device as recited in claim 21, the device further comprising a flex guide coupled with the guide tip wherein the flex guide has a wall defining a slot configuration.

24. The device as recited in claim 23, wherein the flex guide has a bellows configuration.

25. The device as recited in claim 21, wherein the guide tip is configured to penetrate tissue surrounding the lumen.

26. The device as recited in claim 21, wherein the guide tip further includes a cam surface.

27. The device as recited in claim 26, the device further comprising a nose cone housing the guide tip, the nose cone having a cam surface which engages with the guide tip cam surface as the guide tip begins advancement into the lumen wherein the engagement between the nose cone cam surface and the guide tip cam surface directs penetration of the guide tip through the tissue surrounding the lumen.

28. The device as recited in claim 21, wherein the guide tip couples with the inner key at an end opposite the bushing.

29. The device as recited in claim 21, wherein the guide tip further comprises a plurality of tips disposed about a periphery of the guide tip.

30. The device as recited in claim 21, wherein the guide tip is flexible.