CN214805222U

CN214805222U - Expandable percutaneous puncture needle

Info

Publication number: CN214805222U
Application number: CN202120637089.8U
Authority: CN
Inventors: 尹鹏; 梁伟时; 韩渤; 季秋南; 杨晋才; 苏庆军; 海涌
Original assignee: Beijing Chaoyang Hospital
Current assignee: Beijing Chaoyang Hospital
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-11-23
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses an expandable percutaneous puncture needle, which belongs to the technical field of medical instruments and comprises a needle core and a needle cylinder, wherein the needle core is a solid needle, the needle cylinder is wrapped on the periphery of the needle core, the needle core is a cylinder, the inner hole diameter of the needle cylinder is equal to the outer ring diameter of the needle core, the bilateral symmetry of the needle core is provided with tooth sheets, the tooth sheets are triangular prism-shaped, the needle cylinder is composed of two semicircular cylinder walls, the tooth sheets pass through the gap of the needle cylinder and part of the tooth sheets are exposed out of the needle cylinder, the range of the tooth sheets in sclerotin is enlarged when the needle core is rotated, the two cylinder walls are driven to be separated from each other by connecting a driving mechanism to achieve the same size with the outer diameter of a conventional expansion sleeve sheath, the expansion of the puncture needle is realized, the effect of the expansion sleeve is replaced, the insertion process of a guide needle and the expansion sleeve is omitted, and the operation is simpler and safer, the operation difficulty and risk are reduced, and the pain and tissue damage of a patient caused by the secondary insertion of the cannula are reduced.

Description

Expandable percutaneous puncture needle

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an expandable percutaneous puncture needle.

Background

Osteoporosis is a common disease among the elderly, characterized by decreased bone mass, decreased bone strength, and destruction of bone microstructure, and commonly occurs in fractures of limbs and thoracolumbar vertebrae after daily weight bearing, activities, and falls. With the coming of aging society, the proportion of the elderly to the population is getting larger and larger, and the incidence of thoracolumbar osteoporotic fracture is increasing year by year. Percutaneous Vertebroplasty (PVP) is the first choice and widely used minimally invasive surgical technique for the clinical treatment of thoracolumbar osteoporotic fractures at present. The PVP operation adopts a percutaneous puncture needle to enter a damaged vertebral body through skin puncture, then a sleeve is placed and balloon expansion is carried out, and finally bone cement is injected into the vertebral body so as to achieve the purpose of strengthening and repairing the structure of the vertebral body. The current PVP surgery is generally performed under local anesthesia, however, two cannulas and one guide wire are required to be inserted before a working channel for the balloon dilatation catheter to pass through is established, and the patient suffers from the pain of inserting the cannulas into the injured vertebra for two times. Wherein the first insertion is a successful insertion of the percutaneous needle into the targeted vertebral body; then the needle core of the percutaneous puncture needle is pulled out, a guide wire is inserted along the puncture needle, and the percutaneous puncture needle is pulled out; and the second time, the expanding sleeve is inserted into the vertebral body along the guide wire, and the expander is pulled out to establish a working channel.

The utility model with the patent number of CN 207679850U discloses an improved percutaneous puncture balloon dilatation vertebral body kyphoplasty surgical instrument, which comprises a balloon expander and a working sleeve, and is characterized in that the balloon expander comprises a three-way valve, an insertion part and a balloon, and the outer wall of the insertion part of the balloon expander is provided with a circumferential groove; the working sleeve comprises a holding part, a tube head, a tube body and clamping devices, wherein the holding part of the working sleeve is arranged on two sides of the tube head of the working sleeve, and the clamping devices are arranged on the other two sides of the tube head of the working sleeve; clamping device gomphosis is in the pipe wall of work sleeve pipe head, clamping device can stretch out and draw back in the pipe wall, with recess joint convenient operation can enough solve the problem that the sacculus removed, can also the effectual degree of depth that the control sacculus got into the centrum, however, will establish the working channel of sacculus earlier before the sacculus gets into, the establishment of present working channel need insert twice sleeve pipes and once guide wire, this has increased patient's misery, tissue damage and operation complexity, risk and the degree of difficulty.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an expandable percutaneous puncture needle to solve traditional PVP operation and need insert twice sleeve pipe and once guide wire, let patient bear the painful technical problem of twice with sleeve pipe insertion injured vertebra.

The embodiment of the utility model provides an adopt following technical scheme: the needle core is a solid needle, the needle cylinder is wrapped on the periphery of the needle core, the needle core is a cylinder, the diameter of an inner hole of the needle cylinder is equal to the diameter of an outer ring of the needle core, tooth sheets are symmetrically arranged on two sides of the needle core and are triangular prism-shaped, the needle cylinder is composed of two semicircular cylinder walls, and the tooth sheets penetrate through a gap of the needle cylinder and are partially exposed outside the needle cylinder.

Furthermore, a connection driving mechanism is arranged on the needle cylinder and is in transmission connection with one end of the needle cylinder.

Further, the connecting and driving mechanism comprises a connecting plate, a transmission column, a rotating disk and an external box, the two connecting plates and the two transmission columns are arranged, the lower end of each connecting plate is connected with one cylinder wall, the upper section of each connecting plate is connected with one transmission column, the transmission column is movably connected with the rotating disc, the bottom surface of the rotating disc is provided with a sliding chute, the sliding chute is arc-shaped, the transmission post is arranged in the sliding groove, the top end of the transmission post is provided with a convex block, a connecting groove corresponding to the convex block is arranged above the sliding groove, the rotating disc is arranged in an inner cavity in the external box, the bottom of the external box is provided with a moving groove for accommodating the connecting plate, the top surface of rotary disk is equipped with rotatory handle, rotatory handle exposes outside external box, the inside of rotatory handle is equipped with the through-hole, the center of rotary disk and external box all is equipped with logical heart hole.

Furthermore, the connection driving mechanism comprises two racks, two rotating gears, a positioning box and a second rotating handle, the two racks are meshed with the rotating gears, the lower end of each rack is connected with one cylinder wall, a trapezoidal sliding block is arranged on the top surface of each rack, a trapezoidal groove for accommodating the trapezoidal sliding block is arranged at the bottom of the positioning box, a through hole is formed in the center of the positioning box, a through hole is formed in the second rotating handle, and the second rotating handle penetrates through the through hole of the positioning box and is connected with the rotating gears.

Furthermore, a locking groove is formed in the rotating disc, a locking switch is arranged on the external box, and a locking inclined block corresponding to the locking groove is arranged on the locking switch.

Furthermore, a first rotating handle is arranged above the rotating handle.

Furthermore, the top of nook closing member is equipped with fixed handle, the top surface of first twist grip is equipped with the recess, the bottom surface of fixed handle be equipped with the lug that first twist grip's recess corresponds.

The embodiment of the utility model provides an above-mentioned at least one technical scheme who adopts can reach following beneficial effect:

one of which, the embodiment of the utility model provides a range in the sclerotin is enlarged to the tooth piece through setting up on the nook closing member when rotatory nook closing member, drive two section of thick bamboos wall through connecting actuating mechanism and part each other and make the external diameter expansion inflation of pjncture needle, the external diameter of percutaneous pjncture needle enlarges to and conventional expansion sleeve pipe epitheca external diameter size the same this moment, thereby saved guide needle and expansion sleeve's insertion process, the effect of these two kinds of instruments has been replaced, make the operation more simple and convenient and safe, the operation degree of difficulty and risk have been reduced, reduce under the local anesthesia secondary insertion sleeve pipe painful and the tissue damage that brings for the patient.

Two, the embodiment of the utility model provides a to block the sloping block card in the position of locking recess through the locking switch, prevent to touch rotatory handle carelessly, the rotary disk removes for two section of thick bamboo walls keep the state at the tight nook closing member when the locking, when needs separate two section of thick bamboo walls to certain distance and expand, slide the other end with the locking switch, make to block the sloping block and leave the position of locking recess, remove the locking, rotatory handle of rethread separates two section of thick bamboo walls, reach the expansion effect.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic perspective view of the present invention;

fig. 2 is an exploded view of a first angle in the present invention;

FIG. 3 is an exploded view of a second angle in the present invention;

fig. 4 is a schematic structural view of the rotation plate of the present invention;

FIG. 5 is a schematic structural view of the external box of the present invention;

FIG. 6 is an enlarged schematic view of the structure at A in FIG. 3;

fig. 7 is a schematic diagram of the movement of the transmission column when the middle rotary table of the present invention rotates clockwise;

fig. 8 is a schematic diagram of the movement of the transmission column when the middle rotary table of the present invention rotates counterclockwise;

fig. 9 is a schematic structural view of a second embodiment of the connecting driving mechanism of the present invention;

fig. 10 is an exploded view of the second embodiment of the connecting driving mechanism according to the present invention.

Reference numerals

The needle core 1, the tooth blade 11, the fixed handle 12, the needle cylinder 2, the cylinder wall 21, the connection driving mechanism 3, the connecting plate 31, the transmission column 32, the convex block 321, the rotating disk 33, the sliding groove 331, the connecting groove 3311, the rotating handle 332, the first rotating handle 3321, the locking groove 333, the external box 34, the moving groove 341, the locking switch 342, the locking inclined block 3421, the rack 35, the trapezoidal sliding block 351, the rotating gear 36, the positioning box 37, the trapezoidal groove 371 and the second rotating handle 38.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

The embodiment of the utility model provides an expandable percutaneous puncture needle, including nook closing member 1 and cylinder 2, nook closing member 1 is solid needle, cylinder 2 parcel is in the periphery of nook closing member 1, nook closing member 1 is the cylinder, the hole diameter of cylinder 2 equals the outer lane diameter of nook closing member 1, the bilateral symmetry of nook closing member 1 is equipped with teeth piece 11, teeth piece 11 is the triangular prism shape, cylinder 2 comprises two semi-circular section of thick bamboo walls 21, teeth piece 11 passes the clearance of cylinder 2 and a part of teeth piece 11 exposes outside cylinder 2, and when using, the inseparable being in the same place of the needle core 1 of pjncture needle and the cylinder 2 of nook closing member 1 outside of needle core 1, and behind target centrum position is penetrated together to nook closing member 1 and cylinder 2 wholly, the rotary puncture needle is whole, enlarges the scope in the sclerotin through the triangular prism shape teeth piece 11 of nook closing member 1 both sides.

Preferably, the needle cylinder 2 is provided with a connection driving mechanism 3, the connection driving mechanism 3 is in transmission connection with one end of the needle cylinder 2, the connection driving mechanism 3 connects the two cylinder walls 21 together, and the connection driving mechanism 3 drives the two cylinder walls 21 to separate.

In the first embodiment of the connection driving mechanism 3, the connection driving mechanism 3 includes two connecting plates 31, two transmission columns 32, a rotating disc 33 and an external box 34, the connecting plates 31 and the transmission columns 32 are both provided, the lower end of each connecting plate 31 is connected with one cylinder wall 21, the upper section of each connecting plate 31 is connected with one transmission column 32, the transmission columns 32 are movably connected with the rotating disc 33, the bottom surface of the rotating disc 33 is provided with a sliding slot 331, the sliding slot 331 is arc-shaped, the transmission columns 32 are arranged in the sliding slot 331, the top end of the transmission columns 32 is provided with a convex block 321, a connecting slot 3311 corresponding to the convex block 321 is arranged above the sliding slot 331, the rotating disc 33 is arranged in an internal cavity in the external box 34, the bottom of the external box 34 is provided with a moving groove 341 for accommodating the connecting plate 31, and the top surface of the rotating disc 33 is provided with a rotating handle 332, the rotating handle 332 is exposed out of the external box 34, a through hole is arranged inside the rotating handle 332, a through hole is arranged at the centers of the rotating disk 33 and the external box 34, the needle core 1 sequentially passes through the rotating handle 332, the rotating disk 33 and the through hole of the external box 34 and is surrounded by the two cylinder walls 21 below the connecting plate 31, in an initial state, the needle core 1 of the puncture needle and the two cylinder walls 21 outside the needle core 1 are tightly combined, after the needle core 1 and the syringe 2 are integrally penetrated to a target vertebral body part, the needle core 1 and the syringe 2 are integrally rotated, the range in sclerotin is expanded through the triangular prism-shaped tooth sheets 11 at the two sides of the needle core 1, then the needle core 1 is pulled out, the rotating disk 33 is rotated by rotating the rotating handle 332 by hand, the rotating disk 33 rotates to enable the transmission column 32 in the sliding chute 331 to move, and the connecting plate 31 can only perform translational motion on the moving groove 341 on the external box 34, therefore, the transmission column 32 drives the two cylinder walls 21 to be separated through the connecting plate 31, so that the outer diameter of the puncture needle is enlarged, and the function of expanding the sleeve is replaced.

In the second embodiment of the connection driving mechanism 3, the connection driving mechanism 3 includes two racks 35, two rotating gears 36, a positioning box 37 and a second rotating handle 38, the two racks 35 are engaged with the rotating gears 36, the lower end of each rack 35 is connected to one barrel wall 21, a trapezoidal slider 351 is disposed on the top surface of each rack 35, a trapezoidal groove 371 for accommodating the trapezoidal slider 351 is disposed at the bottom of the positioning box 37, a through hole is disposed at the center of the positioning box 37, a through hole is disposed inside the second rotating handle 38, the second rotating handle 38 passes through the through hole of the positioning box 37 to be connected to the rotating gear 36, the second rotating handle 38 is rotated by hand to rotate the rotating gear 36 connected to the second rotating handle 38, the rotating gear 36 rotates to drive the two racks 35 to move by engagement, and the trapezoidal slider 351 on the rack 35 is located in the trapezoidal groove, therefore, the rack 35 can only move along the trapezoidal groove 371, and the rack 35 moves to drive the two cylinder walls 21 to be separated, so that the outer diameter of the puncture needle is enlarged, and the function of expanding the cannula is replaced.

Preferably, the rotating disc 33 is provided with a locking groove 333, the external box 34 is provided with a locking switch 342, the locking switch 342 is provided with a locking inclined block 3421 corresponding to the locking groove 333, the locking inclined block 3421 is clamped at the position of the locking groove 333 through the locking switch 342 to prevent the rotating handle 332 from being touched carelessly, the rotating disc 33 moves to keep the two cylinder walls 21 in a state of clamping the needle core 1 during locking, when the two cylinder walls 21 need to be separated to a certain distance for expansion, the locking switch 342 slides to the other end to enable the locking inclined block 3421 to be separated from the position of the locking groove 333 to release the locking, and then the two cylinder walls 21 are separated through the rotating handle 332 to enable the two cylinder walls 21 to move back to each other on a straight line to achieve the expansion effect.

Preferably, a first rotating handle 3321 is provided above the rotating handle 332, and the rotating disc 33 is rotated when the rotating handle 332 is rotated by holding the first rotating handle 3321 by hand, so that the rotating handle is ergonomic and more comfortable to operate.

Preferably, the top end of the stylet 1 is provided with a fixed handle 12, the top surface of the first rotary handle 3321 is provided with a groove, and the bottom surface of the fixed handle 12 is provided with a convex block corresponding to the groove of the first rotary handle 3321.

The working principle is as follows: in the initial state, the needle core 1 of the puncture needle and the two cylinder walls 21 outside the needle core 1 are tightly combined together, the two cylinder walls 21 form a needle cylinder 2, when the needle core 1 and the needle cylinder 2 are integrally punctured to the injured vertebra target position and depth, the needle core 1 and the needle cylinder 2 are rotated, because sharp tips of the triangular prism-shaped tooth sheets 11 are exposed out of the needle cylinder 2, the range in sclerotin can be expanded by rotating the triangular prism-shaped tooth sheets 11 at two sides of the needle core 1, then the needle core 1 is pulled out, the locking switch 342 is slid to the other end, the locking inclined block 3421 is separated from the position of the locking groove 333, the locking is released, then the rotating handle 332 is rotated by hand, the rotating disk 33 rotates to move the transmission column 32 in the sliding groove 331, and because the connecting plate 31 can only perform translational motion on the moving groove 341 on the external box 34, the transmission column 32 drives the two cylinder walls 21 to be separated through the connecting plate 31, the outer diameter of the puncture needle is expanded, and the outer diameter of the percutaneous puncture needle is expanded to be the same as the outer diameter of the sheath of the conventional expansion sleeve, so that the insertion process of a guide needle and the expansion sleeve is omitted, the effects of the two tools are replaced, the operation is simpler and safer, the operation difficulty and risk are reduced, and the pain and tissue damage of a patient caused by secondary insertion of the sleeve under local anesthesia are reduced.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An expandable percutaneous needle, comprising: the needle comprises a needle core (1) and a needle cylinder (2), wherein the needle core (1) is a solid needle, the needle cylinder (2) is wrapped on the periphery of the needle core (1), the needle core (1) is a cylinder, the diameter of an inner hole of the needle cylinder (2) is equal to the diameter of an outer ring of the needle core (1), tooth sheets (11) are symmetrically arranged on two sides of the needle core (1), the tooth sheets (11) are triangular prism-shaped, the needle cylinder (2) is composed of two semicircular cylinder walls (21), and the tooth sheets (11) penetrate through a gap of the needle cylinder (2) and part of the tooth sheets (11) is exposed out of the needle cylinder (2).

2. An expandable percutaneous puncture needle according to claim 1, wherein the needle cylinder (2) is provided with a connection driving mechanism (3), and the connection driving mechanism (3) is in transmission connection with one end of the needle cylinder (2).

3. The expandable percutaneous puncture needle according to claim 2, wherein the connection driving mechanism (3) comprises two connecting plates (31), two transmission columns (32), two rotating disks (33) and an external box (34), the lower end of each connecting plate (31) is connected with one cylinder wall (21), the upper section of each connecting plate (31) is connected with one transmission column (32), the transmission columns (32) are movably connected with the rotating disks (33), the bottom surface of each rotating disk (33) is provided with a sliding groove (331), the sliding groove (331) is arc-shaped, the transmission columns (32) are arranged in the sliding grooves (331), the top ends of the transmission columns (32) are provided with convex blocks (321), and connecting grooves (3311) corresponding to the convex blocks (321) are arranged above the sliding grooves (331), the rotary disc (33) is arranged in an inner cavity of the external box (34), a moving groove (341) for accommodating the connecting plate (31) is formed in the bottom of the external box (34), a rotary handle (332) is arranged on the top surface of the rotary disc (33), the rotary handle (332) is exposed out of the external box (34), a through hole is formed in the rotary handle (332), and through holes are formed in the centers of the rotary disc (33) and the external box (34).

4. The expandable percutaneous puncture needle according to claim 2, wherein the connection driving mechanism (3) comprises two racks (35), two rotating gears (36), a positioning box (37) and a second rotating handle (38), the two racks (35) are engaged with the rotating gears (36), the lower end of each rack (35) is connected with one cylinder wall (21), a trapezoidal sliding block (351) is arranged on the top surface of each rack (35), a trapezoidal groove (371) for accommodating the trapezoidal sliding block (351) is arranged at the bottom of the positioning box (37), a through hole is arranged at the center of the positioning box (37), a through hole is arranged inside the second rotating handle (38), and the second rotating handle (38) passes through the through hole of the positioning box (37) and is connected with the rotating gears (36).

5. The expandable percutaneous puncture needle according to claim 3, wherein a locking groove (333) is formed on the rotating disk (33), a locking switch (342) is formed on the external box (34), and a locking inclined block (3421) corresponding to the locking groove (333) is formed on the locking switch (342).

6. An expandable percutaneous puncture needle according to claim 3, wherein a first rotating handle (3321) is provided above the rotating handle (332).

7. An expandable percutaneous puncture needle according to claim 6, wherein a fixed handle (12) is provided at the tip of the stylet (1), a groove is provided on the top surface of the first rotary handle (3321), and a projection corresponding to the groove of the first rotary handle (3321) is provided on the bottom surface of the fixed handle (12).