Pneumatic surgical instrument and corresponding methods for penetrating, resecting and microfracturing bone
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/58
A61B-017/60
A61F-002/00
A61B-017/00
A61B-017/16
A61B-017/92
A61F-002/46
A61F-002/34
A61F-002/36
출원번호
US-0413455
(2012-03-06)
등록번호
US-8936603
(2015-01-20)
발명자
/ 주소
Mani, Frederic
Monnier, Thierry
Lebet, Alain
Boulos, Kareem
출원인 / 주소
Mani, Frederic
인용정보
피인용 횟수 :
2인용 특허 :
30
초록▼
Various embodiments of components, devices, systems and methods are provided for a pneumatic surgical instrument having a distal end of a probe configured to penetrate bone, resect or microfracture bone. The injury caused to the bone by the penetration, resection or microfracturing of same causes bl
Various embodiments of components, devices, systems and methods are provided for a pneumatic surgical instrument having a distal end of a probe configured to penetrate bone, resect or microfracture bone. The injury caused to the bone by the penetration, resection or microfracturing of same causes blood to flow to the injury site and promote the growth of new bone at the site. Holes or recesses in the bone may also be employed to treat arthritis in patient, to form holes or recesses in which one or more orthopedic implants are attached or anchored to same, form microfractures in bone, resect bone, perform osteotomies, or to carry out yet other surgical procedures in bone.
대표청구항▼
1. A self-contained pneumatic surgical instrument configured to penetrate, resect or microfracture bone, comprising: a striker;a removable probe mountable on a distal end of the instrument;at least one removable probe cap configured to receive a proximal end of the removable probe therein or thereth
1. A self-contained pneumatic surgical instrument configured to penetrate, resect or microfracture bone, comprising: a striker;a removable probe mountable on a distal end of the instrument;at least one removable probe cap configured to receive a proximal end of the removable probe therein or therethrough, the probe cap being mountable on the distal end of the surgical instrument;at least one removable O-ring disposed between an inner surface of the probe cap and a distal terminus of the removable probe;a pressure regulator;a gas cartridge operably connected to the pressure regulator, the gas cartridge and pressure regulator forming portions of the self-contained pneumatic surgical instrument;a trigger mechanism comprising a trigger, the trigger mechanism being operably connected to the pressure regulator and to the striker;wherein the probe has a distal end configured and shaped to penetrate, resect or microfracture bone, the instrument is configured to deliver at least one shock wave to the probe when the trigger is actuated by a user and a predetermined volume of gas stored at a predetermined range of pressures in the instrument is released thereby to cause the striker to move towards a distal end of the instrument and deliver the shock wave to the proximal end of the probe, the shockwave delivered by the probe to the bone having a rise time ranging between about 2 microseconds and about 20 microseconds, the shockwave being substantially repeatable by the instrument when the trigger is actuated again by the user;wherein the at least one O-ring is selectable according to a thickness, mechanical properties, materials, or stiffness of the O-ring, and the at least one probe cap is selectable such that internal dimensions of the at least one probe cap are configured, thereby to provide a given amount of relative displacement between the probe and the instrument when the instrument is triggered or actuated; andwherein selection of a different one of the at least one O-ring and/or at least one cap provides the probe with a different relative displacement between the probe and the instrument as compared with a selection of another of the at least one cap and/or at least one O-ring. 2. The pneumatic surgical instrument of claim 1, wherein the distal end of the probe is one of pointed, cross-shaped, rounded, pointed and smooth, pointed and deflected away from a longitudinal axis associated with the probe, a tapered sharp point, U-shaped, blunted and rounded, a tapered cross-shape, serrated, and blade-shaped. 3. The pneumatic surgical instrument of claim 1, wherein the O-ring comprises nitrile. 4. The pneumatic surgical instrument of claim 1, further comprising a firing pin disposed between a distal end of the striker and the proximal end of the probe, the distal end of the striker being configured to engage and strike a proximal end of the firing pin. 5. The pneumatic surgical instrument of claim 1, wherein the probe further comprises a shaft having the probe terminus disposed at the proximal end thereof. 6. The pneumatic surgical instrument of claim 5, wherein the removable probe cap is configured to receive the shaft therethrough and to house proximally therefrom within the instrument the at least one probe O-ring disposed against a distal surface of the proximal probe terminus. 7. The pneumatic surgical instrument of claim 1, wherein the probe O-ring has a thickness ranging between about 1 mm and about 6 mm. 8. The pneumatic surgical instrument of claim 1, wherein the probe O-ring has a thickness ranging between about 2 mm and about 4 mm. 9. The pneumatic surgical instrument of claim 1, wherein the at least one removable probe cap is configured to receive a shaft of the probe therethrough and to house proximally therefrom within the instrument a plurality of probe O-rings located near a distal surface of the proximal probe terminus. 10. The pneumatic surgical instrument of claim 1, wherein the probe O-ring has a thickness ranging between about 2 mm and about 3 mm. 11. The pneumatic surgical instrument of claim 1, wherein a displacement provided by the probe when the instrument is actuated or triggered is one of about 0.2 mm, about 0.4 mm, about 0.6 mm, about 0.8 mm, about 1 mm, and about 1.2 mm. 12. The pneumatic surgical instrument of claim 1, wherein the rise time ranges between about 4 microseconds and about 16 microseconds. 13. The pneumatic surgical instrument of claim 1, wherein the rise time ranges between about 6 microseconds and about 10 microseconds. 14. The pneumatic surgical instrument of claim 1, wherein the trigger mechanism further comprises a trigger chamber configured to contain the predetermined volume of gas. 15. The pneumatic surgical instrument of claim 1, wherein the trigger mechanism further comprises a trigger handle and a trigger actuator operably couplable to the trigger handle. 16. The pneumatic surgical instrument of claim 1, wherein the pressure regulator further comprises a pin configured to puncture the gas cartridge when the gas cartridge is mounted in or on the instrument. 17. The pneumatic surgical instrument of claim 1, wherein the gas cartridge is a CO2 cartridge. 18. The pneumatic surgical instrument of claim 1, wherein the gas regulator is further configured to provide pressurized gas to the trigger mechanism at pressures ranging between about 15 bars and about 60 bars. 19. The pneumatic surgical instrument of claim 1, wherein the gas regulator is further configured to provide pressurized gas to the trigger mechanism at pressures ranging between about 25 bars and about 35 bars. 20. The pneumatic surgical instrument of claim 1, wherein the probe further comprises stainless steel. 21. The pneumatic surgical instrument of claim 1, wherein the probe has a length ranging between about 10 cm and about 30 cm.
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