Irrigation handpiece with built in pulsing pump

• US 5,470,305 A
• Filed: 04/19/1993
• Issued: 11/28/1995
• Est. Priority Date: 04/19/1993
• Status: Expired due to Term

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: Grulke, David H., Gately, Nicholas V., Arnett, Jeffery D., Hilsbos, Ruth A., Sertic, James L.
• Primary Examiner(s): Hafer, Robert A.
• Assistant Examiner(s): KENEALY, DAVID
• Application Number:
  US08/049,144
• Time in Patent Office: 953 Days
• Field of Search: 601/154, 601/155, 601/160, 601/161, 601/162, 601/165, 601/163, 604/33, 604/35, 604/39, 604/43, 604/153, 128/DIG. 10, 128/DIG. 12, 433/80
• US Class Current: 601/161
• CPC Class Codes: A61M 1/774 Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 3/0208 before use
• CPC Class Codes: A61M 3/022 Volume; Flow rate
• CPC Class Codes: A61M 3/0258 by means of electric pumps
• CPC Class Codes: A61M 3/0283 with at least two inner passageways, a first one for irrigating and a second for evacuating suction-irrigation systems A61M1/77; aspiration tips with fluid supply means A61M1/85; for negative pressure wound therapy A61M1/92

Abstract

A pulsed irrigation handpiece comprises a pulsed irrigation liquid outlet for applying liquid pulses to a surgical site, a pump unit reciprocatingly driveable for pumping pulses of irrigation liquid through the outlet, an electric powered drive unit for reciprocatingly driving the pump unit, and a housing containing the pump and drive units. A irrigation inlet hose leads from the pump unit out of the handpiece housing and is connectable to a remote irrigation liquid source. An irrigation inlet hose adjacent the remote end thereof and electric conductors extending along the irrigation inlet hose transfer electric power from the supply unit to the drive unit in the handpiece. Removable tips are alternatively removably attachable to the irrigation liquid outlet adjacent the front end of the handpiece.

Claims

1. A pulsed irrigation surgical handpiece, comprising:

pulsed irrigation liquid outlet means for applying irrigation liquid pulses to a surgical site;

pump means reciprocatingly driveable for pumping pulses of irrigation liquid through said outlet means;

powered drive means comprising a hollow shell, motor means in said shell, and link means reciprocatingly driven by said motor means in said shell and having an output end extending reciprocatingly from said shell to operative engagement with said pump means for reciprocatingly driving said pump means;

handpiece housing means for relatively locating therein said pump means and drive means shell in relative operative relation, said handpiece housing means being elongate and bent and comprising a handle and a barrel open to and extending forward from the top of the handle at an angle thereto, said hollow shell extending along and within said handle, said pump means extending along and within said barrel, said pump means is located in said barrel, said shell having an upper end portion pivoted within said housing means on an axis transverse to the plane of said angle of said barrel to said handle.

2. The apparatus of claim 1 in which said motor means comprises a motor and transmission means for reciprocatingly driving said reciprocating link means from said motor and including a rotatable eccentric reciprocatingly driving said link means, said pivot axis of said shell being parallel to and at least close adjacent the rotative axis of said eccentric and at least approximately perpendicular to the reciprocating axis of said link means.

3. The apparatus of claim 2 in which said handpiece housing means has interior faces to cradle and at least prevent shell movement sideways along said pivot axis, said transverse pivot axis being intersected by a central length axis of said pump means, said reciprocating link means being reciprocatable along said length axis of said pump means.

4. A pulsed irrigation surgical handpiece, comprising:

pulsed irrigation liquid outlet means for applying irrigation liquid pulses to a surgical site;

pump means reciprocatingly drivable for pumping pulses of irrigation liquid through said outlet means;

powered drive means comprising a hollow shell, motor means in said shell, and link means reciprocatingly driven by said motor means in said shell and having an output end extending reciprocatingly from said shell to operative engagement with said pump means for reciprocatingly driving said pump means;

handpiece housing means for relatively locating therein said pump means and drive means shell in relative operative relation, said motor means comprising a motor cradled and fixed against rotation at one end of said shell and with a rotative shaft extending toward the other end of said shell, a pinion gear on said shaft, a face gear member rotatably supported in said shell on an axis substantially perpendicular to said motor shaft and underlying said pinion gear and driven on one face thereof by said pinion gear, an output gear rotatably supported on an axis substantially parallel to the face gear axis and having a relatively large diameter gear in mutual perimeter engagement with a relatively small diameter gear on said face gear member, an eccentric fixedly co-shafted with said output gear and rotatable thereby, said axes being spaced in said shell successively toward said other end of said shell, said link means having a yoke surrounding said eccentric for reciprocating toward and away from said output gear axis during rotation of said eccentric, said link means having a portion reciprocatingly extending from said shell for said reciprocating driving of said pump means.

5. A pulsed irrigation handpiece, comprising:

pulsed irrigation liquid outlet means for applying liquid pulses to a surgical site;

pump means having a reciprocatingly driveable expansible chamber member for pumping pulses of irrigation liquid through said outlet means;

powered drive means operatively engageable with said pump means for reciprocatingly driving same;

hand-held handpiece housing means for relatively locating said pump means and drive means in operative relation with one another, said pump means including inlet and outlet valves combined in a single, one-piece, resilient valve element, said pump means further comprising a hollow body open to said expansible chamber member, said resilient valve element being trapped between said body and expansible chamber member, in which said single, one-piece resilient valve element comprises a central portion anchored with respect to said housing means and carrying an integral inlet member resiliently movable with respect to said central portion for opening and closing an irrigation liquid inlet to said expansible chamber member upon expansion of the latter, said central portion further carrying an integral outlet member resiliently movable with respect to said central portion for opening and closing said expansible chamber member to said liquid outlet means upon contraction of said expansible chamber member.

6. The apparatus of claim 5 wherein said resilient valve element central portion is tubular and coaxially communicates with a tapering duckbill outlet valve defining said integral outlet member, said tubular central portion further communicating with a radially outward extending umbrella type inlet valve defining said integral inlet member, said umbrella valve being annular and having a central opening which communicates coaxially from said expansible chamber member through said tubular central portion and outlet duckbill valve to said liquid outlet means.

7. The apparatus of claim 6 in which said pump means has a body, said expansible chamber member comprising a bellows, said bellows and body having annular stepped rims including relatively telescoped axially extending annular flanges radially surrounding said umbrella valve, said outlet valve being offset forward from said telescoping flanges in the direction of irrigation liquid flow, said annular stepped rims including axially opposed, radially outward extending portions clamped against axial separation by radially inward extending ribs of said housing means.

8. A disposable, compact, self-contained, pulsed irrigation, surgical system, comprising:

a hand held handpiece housing carrying;

(i) a pulsed irrigation liquid output tip for applying irrigation liquid pulses to a surgical site,

(ii) a pump driveable for pumping pulses of irrigation liquid through said output tip,

(iii) an electrical motor responsive to electrical energizing for driving said pump, and

(iv) switch means hand actuatable electrically in circuit with said motor;

a battery casing separate from and freely movable with respect to said hand held handpiece housing and electrical contacts for batteries in said casing;

an elongate flexible irrigation liquid hose operatively connected to a liquid inlet of said pump and extending from said handpiece housing remotely to and then through one side of said battery casing, past said electrical contacts for batteries, to a fitting exposed on a side of said battery casing, said fitting being of a type connectable directly and proximately to an irrigation liquid container;

elongate flexible electrical conductors fixed and running with said elongate irrigation liquid hose from said battery casing to said handpiece housing and thence to said motor and switch means circuit for operation of said pump upon actuation of said switch means, in which the battery casing contains electrical batteries, said battery casing comprising a pair of concavely opposed parts permanently snapped together to nonreplacably trap therein said batteries and fixedly clamp said irrigation liquid hose therebetween.

9. A disposable, compact, self-contained, pulsed irrigation, surgical system, comprising:

a hand held handpiece housing carrying;

(i) a pulsed irrigation liquid output tip for applying irrigation liquid pulses to a surgical site,

(ii) a pump driveable for pumping pulses of irrigation liquid through said output tip,

(iii) an electrical motor responsive to electrical energizing for driving said pump, and

(iv) switch means hand actuatable electrically in circuit with said motor;

a battery casing separate from and freely movable with respect to said hand held handpiece housing and electrical contacts for batteries in said casing;

an elongate flexible irrigation liquid hose operatively connected to a liquid inlet of said pump and extending from said handpiece housing remotely to and then through one side of said battery casing, past said electrical contacts for batteries, to a fitting exposed on a side of said battery casing, said fitting being of a type connectable directly and proximately to an irrigation liquid container;

elongate flexible electrical conductors fixed and running with said elongate irrigation liquid hose from said battery casing to said handpiece housing and thence to said motor and switch means circuit for operation of said pump upon actuation of said switch means;

an irrigation liquid supply bag to be hung at a convenient location remote from a surgical site and having a gravity output fitting receiving said fitting on said battery casing for hanging said battery casing directly from said liquid supply bag.