CN219700034U - Spiral centrum drill for percutaneous vertebroplasty - Google Patents

Abstract

The utility model belongs to the technical field of surgical instruments, and particularly relates to a spiral centrum drill for percutaneous centrum forming operation, which comprises a puncture needle assembly, an expansion sleeve assembly and a handle assembly, wherein the puncture needle assembly comprises a solid needle core and a telescopic tube core, a spiral drill bit is integrally formed at the head end of the solid needle core, the outer side surface of the spiral drill bit is in a spiral tip structure, the tail end of the solid needle core is in threaded connection with the telescopic tube core, one end of the telescopic tube core, which is far away from the solid needle core, is fixedly connected with the handle assembly, the expansion sleeve assembly comprises a guide tube and a connecting cover, the guide tube is of a hollow structure, the guide tube is sleeved on the outer side of the solid needle core, one end of the connecting cover is fixedly connected with the guide tube, and the other end of the connecting cover is detachably connected with the handle assembly; the spiral centrum drill is simple in structure and convenient to operate, positioning drilling and depth limiting can be completed at one time, operation time is shortened, pain of a patient is relieved, and operation risk is reduced.

Description

Spiral centrum drill for percutaneous vertebroplasty

Technical Field

The utility model belongs to the technical field of surgical instruments, and particularly relates to a spiral centrum drill for percutaneous vertebroplasty.

Background

At present, osteoporosis is an increasingly serious health problem, the incidence of osteoporotic vertebral fracture caused by the osteoporosis is increased year by year, and vertebroplasty is the most commonly used method for treating the fracture. Vertebroplasty, which is known as percutaneous transluminal vertebroplasty (PVP), belongs to a minimally invasive procedure, and is a technique for reinforcing a vertebral body by injecting bone cement (polymethyl acrylate, PMMA) or artificial bone into the diseased vertebral body. The general operation method is that under the guidance of X-ray perspective, the percutaneous is firstly located by locating the point on the bone body through the locating needle, then the locating needle is penetrated through by the drilling tool and the drilling is carried out at the locating position, after the drilling is finished, the drilling tool is pulled out, and then the trocar is inserted into the drilling hole of the bone body along the locating needle to puncture and inject bone cement.

Prior art vertebral drills generally suffer from the following drawbacks when used for percutaneous vertebroplasty:

1) The common centrum bores adopts sharp straight tube-shape, when doing waist centrum plastic operation, because the cortex of lumbar vertebrae is harder relatively to when patient's lumbar vertebrae joint bag department has hyperplasia or calcification's condition, the centrum bores and takes place to skid easily in setpoint department drilling, leads to the needle point to be not ideal, and the puncture effect is not good enough, and when the puncture point takes place to shift simultaneously, need to look for the puncture point again through perspective.

2) The existing vertebral drill puncture mode generally adopts manual cone insertion or hammer knocking cone insertion after the vertebral pedicle is punctured, and can only judge the puncture depth by relying on experience of a worker during puncture due to lack of a part for limiting the puncture depth, and the puncture needle is easy to change in the entering direction due to uncontrollable force or improper operation of the worker, so that the front edge of the vertebral body is broken through by easy loss of hands, the main organs and viscera at the front edge of the vertebral body are damaged, and uncontrollable artificial iatrogenic injury occurs.

Disclosure of Invention

The utility model aims to provide a spiral vertebral drill for percutaneous vertebroplasty, which aims to solve one or more technical problems in the prior art.

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

the utility model provides a spiral centrum bores for percutaneous vertebroplasty, includes pjncture needle subassembly, cover locates expansion sleeve subassembly and the handle subassembly in the pjncture needle subassembly outside, the pjncture needle subassembly includes entity nook closing member and flexible tube core, the head end integrated into one piece of entity nook closing member has the auger bit, the surface is spiral pointed end structure in the auger bit outside, the tail end of entity nook closing member with flexible tube core threaded connection, the flexible tube core keep away from entity nook closing member one end with handle subassembly fixed connection, expansion sleeve subassembly includes pipe and junction cap, the pipe is hollow structure, and the pipe cover locates the outside of entity nook closing member, the one end of junction cap with pipe fixed connection, the other end with handle subassembly detachable connection; the handle assembly comprises a pushing handle and a steering end, wherein the pushing handle and the steering end are integrally formed to be of a T-shaped structure, and the steering end is rotationally connected to the telescopic tube core.

As a further improvement of the technical scheme, the connection part of the solid needle core and the telescopic tube core is provided with a limiting groove, the inner side wall of the limiting groove is of an internal thread structure, a limiting piece is arranged in the limiting groove, and the limiting piece is connected with one end of the telescopic tube core in a clamping mode.

As a further improvement of the above technical solution, the end of the solid core with the spiral drill bit exceeds the length of the catheter.

As a further improvement of the technical scheme, depth scale marks are equidistantly arranged on the outer side face of the catheter.

As a further improvement of the above technical solution, one end of the connecting cover is provided with a threaded interface, and the threaded interface is in threaded connection with the steering end.

In summary, the beneficial effects of the utility model are as follows:

1. the cone drill provided by the utility model is penetrated in a screwing way, so that the penetrating direction can be stably fixed, and the spiral drill bit is arranged at the front edge of the solid needle core, so that the spiral drill bit can be effectively positioned when drilling holes at the bone body positioning position, the deviation of penetrating points caused by slipping of the drill bit is prevented, meanwhile, the drill bit with the spiral structure has the advantages of good rigidity, high strength and easiness in obtaining higher drilling precision, the cutting speed is high, the tipping is effectively reduced, the abrasive resistance is good, the drilling holes can be rapidly positioned in the vertebroplasty, and the turning efficiency is improved.

2. According to the utility model, the telescopic tube core is arranged at the tail end of the solid needle core, the solid needle core can be prolonged in a spiral manner, and the depth of the drilled hole can be regulated and controlled under the action of the limiting piece, so that the problem that the main organs and viscera at the front edge of the vertebral body are damaged due to the fact that the depth of the drilled hole is too deep to break through the front edge of the vertebral body is avoided, and the practicability of the vertebral body drill is improved.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic view of the structure of the spiral cone drill of the present utility model;

FIG. 2 is an exploded view of the spiral cone drill of the present utility model;

FIG. 3 is a cross-sectional view of the spiral cone drill of the present utility model;

fig. 4 is an enlarged view of the structure at i in fig. 3.

Reference numerals in the drawings illustrate:

1. a lancet assembly; 11. a solid core; 111. a limit groove; 12. a telescoping tube core; 13. a helical drill; 2. an expansion sleeve assembly; 21. a conduit; 211. depth scale marks; 22. a connection cover; 221. a threaded interface; 3. a handle assembly; 31. a push handle; 32. a steering end; 4. and a limiting piece.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

In the description of the present utility model, if there is a word description such as "a plurality" or the like, the meaning of the plurality is one or more, the meaning of the plurality is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and above, below, within, etc. are understood to include the present number. The description of first, second, and third is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

Referring to fig. 1 to 4, several embodiments of a spiral vertebral drill for percutaneous transluminal vertebroplasty according to the present utility model are illustrated below.

The utility model provides a spiral centrum bores for percutaneous vertebroplasty, including pjncture needle subassembly 1, the expansion sleeve subassembly 2 and the handle subassembly 3 of cover locating pjncture needle subassembly 1 outside, pjncture needle subassembly 1 includes entity nook closing member 11 and flexible die 12, the head end integrated into one piece of entity nook closing member 11 has auger bit 13, auger bit 13 outside surface is spiral pointed end structure, the tail end and the flexible die 12 threaded connection of entity nook closing member 11, the one end that the flexible die 12 is kept away from entity nook closing member 11 is fixedly connected with handle subassembly 3, spacing groove 111 has been seted up to the junction of entity nook closing member 11 and flexible die 12, spacing groove 111's inside wall sets up to the internal thread structure, and be provided with locating part 4 in the spacing groove 111, locating part 4 and the one end block connection of flexible die 12; the end of the solid core 11 with the auger bit 13 extends beyond the length of the catheter 21.

Specifically, a spiral drill bit 13 is arranged at the tip end part of the solid needle core 11, the spiral structure of the drill bit can increase the friction between the drill bit and a positioning point, the drill bit can accurately drill holes at the positioning point, the drill bit is prevented from slipping, the drilling position is prevented from shifting, and the positioning needle is convenient to insert into a bone body, so that the positioning efficiency and accuracy are improved; the tail end of the solid needle core 11 is provided with the telescopic tube core 12, the solid needle core 11 can be prolonged in a spiral mode, the solid needle core 33 can be extended backwards to 3-5 cm in drilling, the depth of drilling and the strength in drilling can be regulated and controlled under the action of the limiting piece 4, damage to main organs and viscera at the front edge of the vertebral body caused by overlarge strength or overlarge drilling depth breaking through the front edge of the vertebral body is avoided, the problem that the entering direction of a puncture needle is changed due to improper operation of operators is solved, and therefore uncontrollable artificial iatrogenic damage is caused.

In this embodiment, as shown in fig. 2, the dilating cannula assembly 2 includes a catheter 21 and a connecting cover 22, the catheter 21 is of a hollow structure, the catheter 21 is sleeved outside the solid needle 11, one end of the connecting cover 22 is fixedly connected with the catheter 21, and the other end is detachably connected with the handle assembly 3; depth graduation marks 211 are equidistantly arranged on the outer side surface of the guide pipe 21; one end of the connection cap 22 is provided with a screw interface 221, and the screw interface 221 is screw-coupled with the diverting end 32.

Specifically, the guide tube 21 and the solid needle core 11 are together and spirally drilled into the bone body, at this time, the insertion depth can be accurately judged according to the depth scale line 211 on the outer side of the guide tube 21, and when the guide tube extends to the limit depth position of the rear edge of the vertebral body, the limiting piece 4 limits the vertebral penetration of the spiral drill, so that the spiral drill is prevented from breaking through the front edge of the vertebral body, the protective effect is achieved, and the operation is simple and safe; the solid needle core 11 can be pulled out from the guide tube 21 after reaching a specified depth, is converted into a puncture needle to be inserted into the guide tube 21, and injects bone cement into a bone body, and the connecting cover 22 is fixedly connected with the guide tube 21, so that the guide tube 21 can be detachably connected to the solid needle core 11 through the connecting cover 22, thereby being convenient for the installation and the disassembly of the spiral centrum drill and improving the practicability of the spiral centrum drill.

In this embodiment, the handle assembly 3 includes a push handle 31 and a steering end 32, the push handle 31 and the steering end 32 are integrally formed into a T-shaped structure, and the steering end 32 is rotatably connected to the telescopic tube core 12.

Specifically, push handle 31 utilizes turn to end 32 rotation to connect on flexible tube core 12, when the drilling, can utilize the spiral mode to lengthen the length of flexible tube core 12 according to the degree of depth of drilling, pushes away handle 31 simultaneously and is convenient for the operator and hold effectually when drilling, more is convenient for the operator in the degree of depth of accurate holding drilling in the in-service use.

The working principle of the utility model is as follows:

when percutaneous vertebroplasty is carried out, the position of bone cement to be injected on a bone body is found according to a perspective result, the bone body is inserted into the bone body through a locating needle to realize locating and locating, then the solid needle core 11 is rotated to drill holes, as the drill bit of the solid needle core 11 adopts a spiral structure, the bone body can be directly drilled until a sleeve is inserted into the bone body, the length of the telescopic tube core 12 can be rotationally extended according to actual needs, the drilling depth is limited under the action of the limiting piece 4, the front edge of the vertebral body is prevented from being broken easily when the puncture is too deep, the main organs and organs at the front edge of the vertebral body are damaged, and the bone cement is injected inwards by manual or hammer vertebral body after the puncture is completed. According to the utility model, the spiral drill bit 13 is arranged at the front edge of the solid needle core 11, so that the spiral drill bit 13 can be effectively positioned when drilling is performed at the bone positioning position, the puncture point deviation caused by the drill bit slipping is prevented, meanwhile, the drill bit with the spiral structure has the advantages of good rigidity, high strength and easiness in obtaining higher drilling precision, the cutting speed is high, the tipping is effectively reduced, the drill bit has good wear resistance, the drilling can be rapidly positioned in the vertebroplasty, and the turning efficiency is improved.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (5)

1. The utility model provides a spiral centrum bores for percutaneous vertebroplasty, includes pjncture needle subassembly, cover locate the expansion sleeve subassembly and the handle subassembly in pjncture needle subassembly outside, its characterized in that: the puncture needle assembly comprises a solid needle core and a telescopic tube core, wherein a spiral drill bit is integrally formed at the head end of the solid needle core, the outer side surface of the spiral drill bit is of a spiral tip structure, the tail end of the solid needle core is in threaded connection with the telescopic tube core, one end of the telescopic tube core, which is far away from the solid needle core, is fixedly connected with the handle assembly, the expansion sleeve assembly comprises a guide tube and a connecting cover, the guide tube is of a hollow structure, the guide tube is sleeved at the outer side of the solid needle core, one end of the connecting cover is fixedly connected with the guide tube, and the other end of the connecting cover is detachably connected with the handle assembly; the handle assembly comprises a pushing handle and a steering end, wherein the pushing handle and the steering end are integrally formed to be of a T-shaped structure, and the steering end is rotationally connected to the telescopic tube core.

2. The spiral vertebral drill for percutaneous vertebroplasty according to claim 1, wherein a limiting groove is formed at the joint of the solid needle core and the telescopic tube core, the inner side wall of the limiting groove is of an internal thread structure, and a limiting piece is arranged in the limiting groove and is in clamping connection with one end of the telescopic tube core.

3. A percutaneous vertebroplasty spiral cone drill in accordance with claim 2, wherein the end of the solid core with the spiral bit exceeds the length of the catheter.

4. A spiral vertebral drill for percutaneous vertebroplasty according to claim 3, wherein depth graduations are equidistantly provided on the outer side of the catheter.

5. The percutaneous vertebroplasty spiral cone drill of claim 4, wherein one end of the connection cap is provided with a threaded interface that is threadedly connected to the steering end.