CN213910470U

CN213910470U - Vertebroplasty instrument

Info

Publication number: CN213910470U
Application number: CN202022770679.6U
Authority: CN
Inventors: 张史飞; 任绍东; 马邦兴
Original assignee: Individual
Current assignee: Dongguan East Central Hospital
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-08-10
Anticipated expiration: 2030-11-25

Abstract

The utility model relates to the technical field of medical equipment, in particular to a vertebral body forming device, which comprises a positioner, a needle rod, a puncture guide part and a liquid injection channel forming part, wherein the positioner is provided with a plurality of puncture positioning holes, the puncture guide part comprises a puncture guide pipe, the axial direction of the puncture guide pipe is provided with a guide through hole, the side wall of the puncture guide pipe is provided with a lateral opening communicated with the guide through hole, the bottom wall of the lateral opening is provided with a first guide inclined plane, the bottom end of the liquid injection channel forming part is provided with a flexible open section, the bottom end of the flexible open section is provided with a second guide inclined plane, and the needle rod can penetrate through the puncture positioning holes or the guide through hole; the puncture guide piece can be inserted into the guide through hole, and the first guide inclined plane and the second guide inclined plane are in interference fit so that the flexible channel section protrudes out of the puncture guide piece through the lateral opening. The utility model discloses a location is accurate, only needs unilateral bone puncture, has reduced the number of times of bone puncture, and the centrum takes shape efficient, and the security is good, and the bone cement who injects is even, and the centrum takes shape effectually.

Description

Vertebroplasty instrument

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a vertebral body forming device.

Background

Vertebroplasty, generally called percutaneous transluminal vertebroplasty (PVP), is a minimally invasive surgery, and is a technique for reinforcing a vertebral body by injecting bone cement (polymethyl acrylate, PMMA) or artificial bone into a diseased vertebral body. In the prior art, generally, bone puncture is required to be respectively performed on two symmetrical positions of a vertebra, and then bone cement is respectively injected into the positions after the bone puncture, so that the bone cement is injected into two sides of the vertebra; the operation mode needs two times of bone puncture (bilateral bone puncture), which easily causes secondary injury to patients, increases the risk of operation, and the bone cement on two sides of the vertebra is easy to be uneven, and the operation effect is poor; and most surgeons determine the position of the bone puncture according to experience and hand feeling in the operation process due to condition limitation, the position of the bone puncture is difficult to control, and multiple times of puncture point finding (finding the position of the bone puncture) is often needed, so that secondary injury of a patient is easily caused, and pain of the patient is increased. Therefore, the drawbacks are obvious, and a solution is needed. Therefore, the drawbacks are obvious, and a solution is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, an object of the present invention is to provide a vertebroplasty device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a vertebral body forming device comprises a positioner, a needle rod, a puncture guide part and a liquid injection channel forming part detachably connected with the puncture guide part, wherein the positioner is provided with a plurality of puncture positioning holes, the puncture guide part comprises a puncture guide pipe, a guide through hole is axially arranged on the puncture guide pipe, a lateral opening communicated with the guide through hole is formed in the side wall of the puncture guide pipe, a first guide inclined surface is arranged on the bottom wall of the lateral opening, the lateral opening is close to the bottom end of the puncture guide pipe, a flexible channel section used for forming a liquid injection channel on a vertebral body is arranged at the bottom end of the liquid injection channel forming part, a second guide inclined surface is arranged at the bottom end of the flexible channel section, and the needle rod can penetrate through the puncture positioning holes or the guide through hole; the puncture guide piece can be inserted into the guide through hole, and the first guide inclined plane and the second guide inclined plane are in interference fit so that the flexible channel opening section protrudes out of the puncture guide piece through the lateral opening.

Further, the vertebroplasty instrument further comprises a cement injector having an injection end insertable into the guide through hole.

Furthermore, an inserting pipe is arranged at the bottom end of the positioner, and the inserting pipe is communicated with one of the puncture positioning holes and is coaxially arranged.

Further, the bottom end of the insertion tube is provided with a tip portion.

Furthermore, two adjacent puncture positioning holes are communicated, and the aperture of the communicated part of the two adjacent puncture positioning holes is smaller than the diameter of the puncture positioning hole.

Further, the puncture guide also comprises a handle connected with the top end of the puncture guide tube.

Further, annotate liquid channel formed part and be provided with the stopper, the stopper is used for contradicting with the top of puncture guide.

Further, stopper and notes liquid channel formed part sliding connection, the stopper is via locking part and notes liquid channel formed part fixed connection.

Further, the flexible open section is a steel cable or a steel wire.

Further, the top end of the liquid injection channel molding piece is connected with a handle; the bottom end of the puncture guide tube is provided with an insertion tip part.

The utility model has the advantages that: the utility model has the advantages of simple structure, with low costs, the simple operation, the location is accurate and efficient, reduced the puncture widely and looked for a number of times, only need bone puncture (unilateral bone puncture) can the shaping go out the filling liquid passageway that is used for annotating bone cement, reduced the number of times of bone puncture, shortened the operating time, the vertebroplasty is efficient, the security is good, the probability that causes secondary injury to the patient has been reduced, and the bone cement that injects into is even, structural integrity is good, the vertebroplasty is effectual.

Drawings

Fig. 1 is a schematic view of the exploded structure of the present invention.

Fig. 2 is a schematic perspective view of the positioner and the needle bar of the present invention.

Fig. 3 is a schematic view of the three-dimensional structure of the positioner with a plurality of puncture positioning holes.

Fig. 4 is a schematic perspective view of the needle bar, the puncture guide and the injection passage molding member according to the present invention in a use state.

Fig. 5 is a schematic perspective view of another usage state of the needle bar, the puncture guide and the injection passage molding member according to the present invention.

Fig. 6 is a partially enlarged view of a portion a in fig. 4.

Description of reference numerals:

1. a positioner; 11. puncturing a positioning hole; 12. an insertion tube; 13. a tip portion; 14. a first scale mark; 15. a positioning tube; 2. a needle bar; 21. a second scale mark; 3. a puncture guide; 31. puncturing the guide tube; 32. a guide through hole; 33. a lateral opening; 34. a first guide slope; 35. a handle; 36. inserting the tip; 37. a third scale line; 4. a liquid injection passage molding member; 41. a flexible tunnel section; 42. a second lead slope; 43. a handle; 5. a limiting block; 51. a locking member; 6. a bone cement injector.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 6, the utility model provides a vertebral body forming device for vertebral body forming, which comprises a positioner 1, a needle rod 2, a puncture guide member 3 and a liquid injection channel forming member 4 detachably connected with the puncture guide member 3, wherein the positioner 1 is provided with a plurality of puncture positioning holes 11, the puncture guide member 3 comprises a puncture guide tube 31, the puncture guide tube 31 is axially provided with a guide through hole 32, the side wall of the puncture guide tube 31 is provided with a lateral opening 33 communicated with the guide through hole 32, the bottom wall of the lateral opening 33 is provided with a first guide inclined surface 34, the lateral opening 33 is arranged near the bottom end of the puncture guide tube 31, the bottom end of the liquid injection channel forming member 4 is provided with a flexible open channel section 41 for forming a liquid injection channel on the vertebral body, the bottom end of the flexible open channel section 41 is provided with a second guide inclined surface 42, the needle bar 2 can penetrate through the puncture positioning hole 11 or the guide through hole 32; the puncture guide 3 can be inserted into the guide through hole 32, and the first guide inclined surface 34 is in interference fit with the second guide inclined surface 42 so that the flexible open channel section 41 protrudes out of the puncture guide 3 through the lateral opening 33; in this embodiment, the vertebroplasty device further comprises a bone cement injector 6 for injecting bone cement, and an injection end of the bone cement injector 6 is insertable into the guide through hole 32; the cement injector 6 may be a prior art injector and will not be described in detail herein.

In practical application, a medical worker preliminarily determines the position of bone puncture according to the result of projection of external equipment (such as an X-ray machine and the like) on the body surface of a patient, then inserts the bone puncture position into the skin and vertebra of the patient from the preliminarily determined position through a needle rod 2, when the inserted position of the needle rod 2 and the bone puncture position have deviation, the medical worker firstly sleeves one puncture positioning hole 11 on a positioner 1 on the needle rod 2 so that the needle rod 2 penetrates through one puncture positioning hole 11 of the positioner 1, the medical worker positions the bone puncture position according to the deviation value and the positioner, when the medical worker finds that one puncture positioning hole 11 in the positioner 1 corresponds to the bone puncture position, the needle rod 2 can be pulled out and then inserted into the puncture positioning hole 11 corresponding to the bone puncture position, and a new needle rod 2 can be inserted into the puncture positioning hole 11 corresponding to the bone puncture position, the needle rod 2 is inserted into the skin and vertebra of a patient, so that the position of bone puncture can be found quickly and accurately, the locator 1 can be taken away, then a medical worker firstly sleeves the puncture guide pipe 31 of the puncture guide part 3 outside the needle rod 2, so that the needle rod 2 penetrates through the guide through hole 32 of the puncture guide pipe 31, the puncture guide part 3 moves along the needle rod 2 and inserts the puncture guide pipe 31 into the skin and vertebra, the puncture guide pipe 31 finds the bone puncture position accurately, at the moment, the medical worker can pull out the needle rod 2, the medical worker then inserts the injection channel molding part 4 into the guide through hole 32 of the puncture guide pipe 31, the flexible open channel section 41 moves along the guide through hole 32, when the second guide inclined surface 42 of the flexible open channel section 41 is abutted against the first guide inclined surface 34, the first guide inclined surface 34 plays a guiding role in guiding the flexible open channel section 41, under the abutting cooperation effect of the first guide inclined surface 34 and the second guide inclined surface 42 and along with the abutting of the first guide inclined surface 34 against the flexible open channel section 41 The outer side wall and the flexible open channel section 41 are subjected to the resistance of the vertebra, the flexible open channel section 41 can turn and bend into an arc shape, so that the flexible open channel section 41 protrudes out of the puncture guide part 3 through the lateral opening 33 and is provided with an arc-shaped liquid injection channel on the vertebra, and the liquid injection channel is positioned at the central part of the vertebra body; in the process of molding the injection passage, in order to mold the injection passage more quickly, medical personnel can pull out and insert the injection passage molding member 4 repeatedly and repeatedly, so that the flexible open passage section 41 pokes out the injection passage on the vertebra. When annotating the liquid channel shaping back, medical personnel pull out liquid channel shaping spare 4 from puncture guide 3 to inject bone cement into through bone cement injector 6 in to annotating the liquid channel, make the bone cement that injects into in the vertebra even, and the bone cement who injects is complete structure, intensity and hardness are better, make the sick vertebra obtain firm stable support more. The utility model has the advantages of simple structure, with low costs, the simple operation, the location is accurate and efficient, reduced the puncture widely and looked for a number of times, only need bone puncture (unilateral bone puncture) can the shaping go out the filling liquid passageway that is used for annotating bone cement, reduced the number of times of bone puncture, shortened the operating time, the vertebroplasty is efficient, the security is good, the probability that causes secondary injury to the patient has been reduced, and the bone cement that injects into is even, structural integrity is good, the vertebroplasty is effectual.

In this embodiment, a plurality of puncture locating holes 11 parallel arrangement just run through locator 1, and a plurality of puncture locating holes 11 equidistance sets up, the bottom of locator 1 is provided with insert tube 12, insert tube 12 and one of them puncture locating hole 11 intercommunication and coaxial setting, puncture locating hole 11 is the round hole, the bottom of needle bar 2 is provided with the prong.

In practical application, a medical worker preliminarily determines the position of bone puncture according to the result of projection of an external device on the body surface of a patient, then inserts the bone puncture position into the skin and vertebra of the patient from the preliminarily determined position of the bone puncture through the needle rod 2, when the inserted position of the needle rod 2 and the bone puncture position have deviation, the medical worker sleeves the insertion tube 12 on the positioner 1 on the needle rod 2 so that the insertion tube 12 moves along the needle rod 2 and inserts into the skin and vertebra of the patient, the needle rod 2 penetrates through the insertion tube 12 and the puncture positioning hole 11 communicated with the insertion tube 12, at the moment, the insertion tube 12 plays a positioning role, the stability of the positioner 1 is improved, then the medical worker positions the bone puncture position according to the deviation value and through the positioner 1, when the medical worker finds one puncture positioning hole 11 in the positioner 1 corresponding to the bone puncture position, can extract the needle bar 2 and then insert in the puncture locating hole 11 that corresponds with the position of bone puncture, also can insert new needle bar 2 in the puncture locating hole 11 that corresponds with the position of bone puncture for this needle bar 2 inserts in patient's skin and the vertebra, thereby can find the position of bone puncture fast and accurately, can take away locator 1 this moment, so that medical personnel carry out subsequent operation work.

In this embodiment, the bottom end of the insertion tube 12 is provided with a tip portion 13; specifically, the tip portion 13 has a conical shape. By providing the tip portion 13 at the bottom end of the insertion tube 12, the insertion tube 12 can be easily inserted into the skin and bone of a patient, and the difficulty and risk of the operation can be reduced.

In this embodiment, the insertion tube 12 is provided with a first scale line 14 and a first scale numerical value, and the first scale line 14 is arranged along the length direction of the insertion tube 12. The first graduation marks 14 and the first graduation values provide medical personnel with a view of the length of insertion tube 12 inserted into the patient, which facilitates the medical personnel to know the depth of penetration.

In this embodiment, the insertion tube 12 is a circular tube, which is convenient for manufacturing and insertion of the insertion tube 12 into the skin and bone of a patient.

In this embodiment, the needle bar 2 is provided with a second scale line 21 and a second scale numerical value, and the second scale line 21 is arranged along the length direction of the needle bar 2. The second graduation line 21 and the second graduation numerical value are used for observing the length of the needle rod 2 inserted into the patient by medical staff, and the medical staff can know the puncture depth conveniently.

In this embodiment, the positioner 1 includes a plurality of positioning tubes 15, the positioning tubes 15 are arranged in a straight line, and the positioning tubes 15 are of an integrated structure, so that the positioner 1 is substantially in a flat plate shape, which is convenient for manufacturing and molding, and the positioner 1 has good structural stability; the plurality of puncture positioning holes 11 and the plurality of positioning tubes 15 are arranged in a one-to-one correspondence manner, and the insertion tube 12 is arranged on one of the positioning tubes 15; preferably, the insertion tube 12 is located at the start or end position of the fixture 1, and the insertion tube 12 is in communication with the first puncture positioning hole 11 or the last puncture positioning hole 11. Of course, a plurality of positioning tubes 15 may be arranged in a rectangular array.

In order to further improve the positioning accuracy and precision, in the present embodiment, two adjacent piercing positioning holes 11 are communicated, and the aperture of the communication portion of two adjacent piercing positioning holes 11 is smaller than the diameter of the piercing positioning hole 11. This structural design for the interval between two adjacent puncture locating holes 11 reduces, and the precision is high, and the location is more accurate.

In this embodiment, the puncture guide 3 further includes a handle 35 connected to the tip of the puncture guide tube 31. Medical personnel hold handle 35, and medical personnel of being convenient for insert patient's skin and the bone puncture position of vertebra with puncture stand pipe 31, and the simple operation reaches labour saving and time saving's effect.

In this embodiment, the liquid injection channel forming part 4 is provided with a limiting block 5, and the limiting block 5 is used for abutting against the handle 35 of the puncture guide 3 or/and the top of the puncture guide tube 31. Preferably, the top of the handle 35 is provided with a contact block which is abutted against the limit block 5; in the process that the liquid injection channel forming piece 4 reciprocates along the guide through hole 32 so that the flexible open channel section 41 forms the liquid injection channel on the vertebra, when the limiting block 5 abuts against the abutting block, the inserted position of the liquid injection channel forming piece 4 is proved to reach the maximum value so as to limit the position of the liquid injection channel forming piece 4, the situation that the flexible open channel section 41 pierces the vertebra due to excessive insertion of the liquid injection channel forming piece 4 is avoided, and the use safety performance is improved.

In this embodiment, the limiting block 5 is sleeved outside the liquid injection channel forming part 4, the limiting block 5 is connected with the liquid injection channel forming part 4 in a sliding manner, and the limiting block 5 is fixedly connected with the liquid injection channel forming part 4 through a locking part 51; preferably, the locking part 51 is a bolt, and is in threaded connection with the limiting block 5 through the bolt, and the end of the bolt is abutted against the liquid injection channel forming part 4 so as to firmly fix the limiting block 5 on the liquid injection channel forming part 4. This structural design for stopper 5 is adjustable in the position on annotating liquid passageway formed part 4, and stopper 5's flexibility is good, easy dismounting.

In this embodiment, the top end of the liquid injection channel molding member 4 is connected with a handle 43. The medical staff holds the handle 43 and can pull out and insert the liquid injection channel forming part 4 back and forth, and the use is convenient and fast.

In this embodiment, the bottom end of the puncture guide tube 31 is provided with an insertion tip portion 36, and the lateral opening 33 is located above the insertion tip portion 36 and is disposed near the insertion tip portion 36. By additionally arranging the insertion tip part 36, the puncture guide tube 31 can be conveniently inserted into the skin and the vertebra of a patient, and the difficulty of the operation is reduced.

In this embodiment, the puncture guide tube 31 is provided with third graduation marks 37 or/and third graduation numerical values, and the third graduation marks 37 are arranged along the longitudinal direction of the puncture guide tube 31. The third scale line 37 and the third scale value are used for the medical staff to observe the length of the puncture guide tube 31 inserted into the patient, which is beneficial for the medical staff to know the puncture depth.

In this embodiment, the flexible open section 41 is a steel cable or a steel wire. The steel cable or the steel wire has proper strength and can generate restorable bending deformation, thereby being beneficial to forming a liquid injection channel on the vertebra.

All the technical features in the embodiment can be freely combined according to actual needs.

The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

Claims

1. A vertebroplasty instrument, comprising: the puncture needle comprises a positioner, a needle rod, a puncture guide part and a liquid injection channel forming part detachably connected with the puncture guide part, wherein the positioner is provided with a plurality of puncture positioning holes, the puncture guide part comprises a puncture guide pipe, a guide through hole is axially arranged on the puncture guide pipe, a lateral opening communicated with the guide through hole is formed in the side wall of the puncture guide pipe, the bottom wall of the lateral opening is provided with a first guide inclined surface, the lateral opening is close to the bottom end of the puncture guide pipe, a flexible channel opening section used for forming a liquid injection channel on a vertebral body is arranged at the bottom end of the liquid injection channel forming part, a second guide inclined surface is arranged at the bottom end of the flexible channel opening section, and the needle rod can penetrate through the puncture positioning holes or the guide through hole; the puncture guide piece can be inserted into the guide through hole, and the first guide inclined plane and the second guide inclined plane are in interference fit so that the flexible channel opening section protrudes out of the puncture guide piece through the lateral opening.

2. A vertebroplasty device as in claim 1, wherein: the vertebroplasty device further comprises a cement injector having an injection end insertable into the guide through-hole.

3. A vertebroplasty device as in claim 1, wherein: the bottom end of the locator is provided with an insertion tube, and the insertion tube is communicated with one of the puncture positioning holes and is coaxially arranged.

4. A vertebroplasty device as in claim 3 wherein: the bottom end of the insertion tube is provided with a tip part.

5. A vertebroplasty device as in claim 1, wherein: two adjacent puncture locating holes are communicated, and the aperture of the communicated part of the two adjacent puncture locating holes is smaller than the diameter of the puncture locating hole.

6. A vertebroplasty device as in claim 1, wherein: the puncture guide piece also comprises a handle connected with the top end of the puncture guide tube.

7. A vertebroplasty device as in claim 1, wherein: annotate liquid channel formed part and be provided with the stopper, the stopper is used for contradicting with the top of puncture guide.

8. A vertebroplasty device as in claim 7, wherein: the stopper with annotate liquid channel formed part sliding connection, the stopper is via locking part and annotate liquid channel formed part fixed connection.

9. A vertebroplasty device as in claim 1, wherein: the flexible open section is a steel cable or a steel wire.

10. A vertebroplasty device as in claim 1, wherein: the top end of the liquid injection channel forming piece is connected with a handle; the bottom end of the puncture guide tube is provided with an insertion tip part.