CN211962101U - Percutaneous puncture centrum biopsy device - Google Patents

Abstract

The utility model provides a percutaneous puncture centrum biopsy device belongs to the medical instrument field. It has solved current percutaneous aspiration centrum biopsy surgical instruments, the difficult high scheduling problem that the sample acquireed, a percutaneous aspiration centrum biopsy device, including the puncture trocar, the guide, along the combination work sleeve pipe that the guide put into, a piece is got to the clamp that is used for pressing from both sides to get bone tissue or focus tissue, the puncture trocar is including the puncture needle that is used for the puncture to get into the centrum and the puncture pipe outside the puncture needle is located to the cover, the outer tube outside the inner core is located including inner core and cover to the combination work sleeve pipe, outer pipe tip is provided with the sawtooth that is used for separating bone tissue or focus tissue. The utility model has the advantages of simple and convenient acquisition of specimens and the like.

Description

Percutaneous puncture centrum biopsy device

Technical Field

The utility model belongs to the field of medical equipment, in particular to percutaneous aspiration centrum biopsy device.

Background

Percutaneous Vertebroplasty (PVP) and Percutaneous Kyphoplasty (PKP) can obviously relieve pain caused by vertebral compression fracture, and have the characteristics of small wound, quick analgesic effect, short treatment time, few complications and the like. Vertebral compression fracture is mainly caused by osteoporosis, but spinal metastasis, primary myeloma and the like are important causes which are not negligible. Therefore, in recent years, many scholars have suggested taking biopsies routinely during vertebroplasty to prevent misdiagnosis.

The current commonly used biopsy taking step in vertebroplasty in hospitals is as follows: taking a patient in a prone position, filling the chest and abdomen with air, disinfecting and paving the towel conventionally, establishing a working channel by adopting percutaneous unilateral or bilateral pedicle puncture under the monitoring of a C-arm X-ray machine, planning a puncture angle, a puncture depth and a puncture path according to a preoperative measurement result, taking out an inner core of the puncture needle after the depth of a needle point reaches a centrum central line, putting a guide wire, pulling out the puncture needle, and putting a working sleeve along the guide wire. After the working cannula is inserted, several biopsy procedures are currently used:

firstly, a bone drill or a trepan is screwed into a vertebral body clockwise along a working channel to reach a position 2-3 cm away from the front edge of the vertebral body, then the vertebral body is screwed out clockwise, bone attached to a drill bit is taken down, and if the bone is not obtained or is less, the operation needs to be repeated.

Secondly, a biopsy needle connected with an injector slowly rotates to enter through a working channel, then the negative pressure state of the injector is kept, and the biopsy needle is slowly rotated reversely to take out the biopsy needle, so that a sample is obtained. The specimen is collected and then sent to a pathology department for examination, and after the specimen is taken, a proper amount of bone cement is pushed into the specimen through a working channel.

The biopsy taking mode has high operation difficulty, often needs to be operated for many times, has large damage range to the vertebral body and has lower biopsy success rate. The main reasons are as follows: 1. although the bone drill or trepan can drill part of bone, the bone attachment is influenced by smooth inner wall and bleeding in the channel, so that the difficulty in obtaining the specimen is increased; 2. a20 ml common injector is frequently used when a negative pressure puncture needle sucks a specimen, the negative pressure of the common injector is often not enough to suck sclerotin, the first method is usually matched with the negative pressure puncture needle to obtain the specimen, the first method is usually matched with the negative pressure puncture needle to suck the specimen for multiple times, and meanwhile, the quality of the obtained specimen cannot be guaranteed.

Therefore, the difficulty of obtaining the specimen of the existing percutaneous aspiration centrum biopsy surgical instrument is high.

Disclosure of Invention

The utility model aims at providing a percutaneous aspiration centrum biopsy device aiming at the problems in the prior art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a percutaneous puncture centrum biopsy device which characterized in that, including puncture trocar, guide, along the combination work sleeve pipe that the guide was put into, be used for pressing from both sides the piece of getting bone tissue or focus tissue, the puncture trocar including the puncture needle that is used for the puncture to get into the centrum and the outer puncture pipe of pjncture needle is located to the cover, combination work sleeve pipe include the inner core and the cover locate the outer tube of inner core, outer tube tip be provided with the sawtooth that is used for separating bone tissue or focus tissue.

The utility model discloses a theory of operation: the patient takes the prone position and carries out the electrocardiographic monitoring and checking vital signs. And (5) determining the position of the diseased vertebra body through C-shaped arm fluoroscopy, marking, and spreading a towel through conventional disinfection. Taking about 1-2 cm outside the body surface projection of the pedicle of vertebral arch as a needle insertion point, and anesthetizing 1% lidocaine layer by layer until reaching periosteum. And slowly rotating the puncture trocar to enter the vertebral pedicle at an inclination angle of 10-15 degrees under the perspective of the C-shaped arm, and when the side plate shows that the needle point of the puncture needle reaches the rear edge of the vertebral body and the needle point of the puncture needle does not exceed the inner edge of the vertebral pedicle in the normal position, continuously puncturing the puncture trocar to enter the vertebral body to a position 1/3 to 1/2 beyond the rear edge of the vertebral body. Then taking out the puncture needle, putting a guide part into the puncture tube, taking out the puncture tube, putting the combined working sleeve along the guide part, taking out the inner core, slightly rotating the outer tube forwards clockwise, and separating partial bone tissues or focus tissues by the sawteeth at the front end of the outer tube. Then the clamping piece penetrates through the outer tube to clamp the separated bone tissue or focus tissue, and the clamping piece clamps the bone tissue or focus tissue and takes out the bone tissue or focus tissue through the outer tube. The utility model discloses puncture trocar, guide, combination work sleeve pipe, clamp and get a cooperation and use, can be simple and convenient acquireing sample (bone tissue or focus tissue after the sawtooth separation promptly). The operation is simple, and repeated bone taking operation is not needed.

In the above mentioned biopsy device, it also includes a push rod and an injection tube sleeved outside the push rod, the injection tube and the push rod are used to penetrate into the outer tube, and bone cement is injected from the injection tube.

In the above mentioned biopsy device, the guide is a guide wire.

In the above mentioned biopsy device, the inner core is provided with a channel for the guide member to pass through.

In the percutaneous puncture centrum biopsy device, the puncture needle is provided with a first limiting part, the puncture tube is provided with a first resisting part, and the puncture needle penetrates into the puncture tube until the first limiting part is resisted by the first resisting part.

In the percutaneous puncture centrum biopsy device, a second limiting part is arranged in the inner core, a second resisting part is arranged on the outer tube, and the inner core penetrates into the outer tube until the second limiting part is resisted by the second resisting part.

In the above percutaneous aspiration centrum biopsy device, the push rod is provided with a third limiting part, the injection tube is provided with a third resisting part, and the push rod penetrates into the injection tube until the third limiting part is resisted by the third resisting part.

In the percutaneous puncture centrum biopsy device, the clamping piece, the puncture tube, the outer tube and the injection tube are all provided with developing scales, and the developing scales are made of developer.

In foretell percutaneous aspiration centrum biopsy device, the clamp get the piece including fixed pipe and in fixed pipe fixed connection's fixed handle, fixed intraductal movable rod that is provided with, movable rod sliding connection in fixed pipe, the movable rod articulate and have movable handle, movable handle and fixed handle between be provided with the elastic component, the tip of fixed pipe is provided with binding clip and lower binding clip, last binding clip and lower binding clip link together through pivot pin pivotally, last binding clip and lower binding clip all include the tissue contact surface that is located its distal end portion to and run through the microscler cam groove of its proximal end portion, microscler cam groove wear to be equipped with the drive pin, the drive pin can slide in microscler cam groove to make last binding clip and lower binding clip can pivot motion relatively.

In the above biopsy device, the two ends of the driving pin are connected with the movable rod through a connecting rod, the connecting rod is located in the fixed tube, and the two ends of the pivot pin are fixedly connected with the fixed tube.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses puncture trocar, guide, combination work sleeve pipe, clamp and get a cooperation and use, can be simple and convenient acquireing sample (bone tissue or focus tissue after the sawtooth separation promptly). The operation is simple, and repeated bone taking operation is not needed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the clamping member of the present invention;

FIG. 3 is a schematic structural view of the upper and lower binding clip of the present invention;

fig. 4 is a schematic structural view of the connecting rod of the present invention.

In the figure, 1, puncture trocar; 2. a guide member; 3. assembling a working sleeve; 4. clamping and taking the workpiece; 5. puncturing needle; 6. a puncture tube; 7. an inner core; 8. an outer tube; 9. saw teeth; 10. a push rod; 11. an injection pipe; 12. a channel; 13. a first limiting part; 14. a first resisting part; 15. a second limiting part; 16. a second resisting part; 17. a third limiting part; 18. a third resisting part; 19. developing scales; 20. a fixed tube; 21. fixing a handle; 22. a movable rod; 23. a movable handle; 24. an elastic member; 25. an upper binding clip; 26. a lower binding clip; 27. a pivot pin; 28. a tissue contacting surface; 29. an elongated cam slot; 30. a drive pin; 31. a connecting rod.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-4, a percutaneous puncture centrum biopsy device comprises a puncture trocar 1, a guide 2, a combined working cannula 3 placed along the guide 2, and a clipping member 4 used for clipping bone tissue or lesion tissue, wherein the puncture trocar 1 comprises a puncture needle 5 used for puncturing into a centrum and a puncture tube 6 sleeved outside the puncture needle 5, the combined working cannula 3 comprises an inner core 7 and an outer tube 8 sleeved outside the inner core 7, and the end of the outer tube 8 is provided with a sawtooth 9 used for separating the bone tissue or the lesion tissue.

In further detail, the bone cement injection device further comprises a push rod 10 and an injection pipe 11 sleeved outside the push rod 10, wherein the injection pipe 11 and the push rod 10 are used for penetrating into the outer pipe 8, and bone cement is injected from the injection pipe 11. When the clamping of the specimen (i.e., the bone tissue or lesion tissue separated by the saw teeth 9) is completed, the injection tube 11 is fitted over the push rod 10 using the push rod 10 and the injection tube 11, and then inserted into the outer tube 8 together, and then the push rod 10 is withdrawn, and bone cement is injected through the injection tube 11.

In further detail, the guide 2 is a guide wire. A channel 12 is provided in the core 7 for the guide 2 to pass through. The guide 2 functions as a positioning guide. When the composite working sleeve 3 is placed along the guide 2, the guide 2 passes through the passage 12. In order to facilitate the insertion of the combined working sleeve 3, a sharp part is arranged at the front end of the inner core 7.

In more detail, the puncture needle 5 is provided with a first limiting part 13, the puncture tube 6 is provided with a first resisting part 14, and the puncture needle 5 penetrates into the puncture tube 6 until the first limiting part 13 is resisted by the first resisting part 14.

The puncture tube 6 is made of medical plastic, the puncture needle 5 is made of metal, and the puncture tube 6 is relatively soft and cannot be punctured independently. Therefore, the puncture tube 6 needs to be inserted together with the puncture needle 5.

In more detail, a second limiting portion 15 is disposed in the inner core 7, a second stopping portion 16 is disposed in the outer tube 8, and the inner core 7 penetrates the outer tube 8 until the second limiting portion 15 is stopped by the second stopping portion 16.

The outer tube 8 is made of medical plastic, and the inner core 7 is made of rigid material, so that the inner core 7 and the outer tube 8 are conveniently placed along the guide wire together.

In more detail, the push rod 10 is provided with a third limiting portion 17, the injection pipe 11 is provided with a third resisting portion 18, and the push rod 10 penetrates through the injection pipe 11 until the third limiting portion 17 is resisted by the third resisting portion 18.

The injection tube 11 is made of medical plastic, and the push rod 10 is made of rigid material, so that the injection tube 11 and the push rod 10 are conveniently placed along the outer tube 8 together.

In more detail, the gripping member 4, the puncture tube 6, the outer tube 8 and the injection tube 11 are all provided with developing scales 19, and the developing scales 19 are made of developer. The utility model discloses operate under C type arm perspective, event puncture tube 6, outer tube 8 and injection pipe 11 all are provided with development scale 19, for convenient medical personnel operation observation.

In more detail, the gripper 4 includes a fixed tube 20 and a fixed handle 21 fixedly connected to the fixed tube 20, a movable rod 22 is disposed in the fixed tube 20, the movable rod 22 is slidably connected to the fixed tube 20, the movable rod 22 is hinged to a movable handle 23, an elastic member 24 is disposed between the movable handle 23 and the fixed handle 21, an upper jaw 25 and a lower jaw 26 are disposed at an end of the fixed tube 20, the upper jaw 25 and the lower jaw 26 are pivotally connected together by a pivot pin 27, each of the upper jaw 25 and the lower jaw 26 includes a tissue contact surface 28 at a distal end thereof and an elongated cam slot 29 extending through a proximal end thereof, a drive pin 30 is disposed through the elongated cam slot 29, and the drive pin 30 is slidable in the elongated cam slot 29, so that the upper jaw 25 and the lower jaw 26 can perform relative pivotal movement.

In more detail, the two ends of the driving pin 30 are connected to the movable rod 22 through a connecting rod 31, the connecting rod 31 is located in the fixed tube 20, and the two ends of the pivot pin 27 are fixedly connected to the fixed tube 20.

When the gripping member 4 grips, the movable handle 23 is pressed, so that the movable handle 23 approaches to the fixed handle 21, the movable rod 22 hinged to the movable handle 23 moves to one side close to the movable handle 23 along the fixed tube 20 (lever principle), the connecting rod 31 is driven to move together, the connecting rod 31 is connected with the driving pin 30, the driving pin 30 is driven to slide to one side close to the movable handle 23, the driving pin 30 slides in the long cam groove 29, the upper tong head 25 and the lower tong head 26 approach to each other, and a specimen is gripped.

After the forceps are taken out, the hand is released, the elastic piece 24 is arranged between the movable handle 23 and the fixed handle 21, under the action of the elastic piece 24, the movable handle 23 is reset, the movable rod 22 moves towards one side far away from the movable handle 23 along the fixed pipe 20 to drive the connecting rod 31 to move together, the connecting rod 31 is connected with the driving pin 30, so that the driving pin 30 is driven to move towards one side far away from the movable handle 23, the driving pin 30 slides in the long cam groove 29, and the upper forceps head 25 and the lower forceps head 26 are far away from each other to be in an open state.

Since the two ends of the driving pin 30 are connected to the movable rod 22 through the connecting rod 31, the movement of the movable rod 22 will drive the driving pin 30 to move.

The tissue contacting surface 28 and the elongated cam slot 29 are located on either side of the pivot pin 27, and the pivot pin 27 is fixedly attached at both ends to the stationary tube 20. The drive pin 30 slides in the elongate cam slot 29 and does not move the upper and lower jaws 25, 26 to the side away from or towards the movable handle 23, but only causes the upper and lower jaws 25, 26 to pivot relative to each other.

Since the movable rod 22 is hinged to the movable handle 23, the movable handle 23 is pressed according to the lever distance, the movable handle 23 approaches the fixed handle 21, the movable rod 22 moves to the side near the movable handle 23, and the elastic member 24 is compressed. When the user releases the hand, the movable handle 23 automatically resets, and the movable rod 22 moves towards the side far away from the movable handle 23. The specimen is clamped by the movable handle 23 and the fixed handle 21 which are pressed by one hand, so that the specimen clamping device is very convenient, and the fixed handle 21 provides a stress point, so that the specimen clamping device is more labor-saving compared with two movable handles (similar to a scissor type).

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the puncture trocar 1, the guide 2, the combined working cannula 3, the gripper 4, the puncture needle 5, the puncture tube 6, the inner core 7, the outer tube 8, the serrations 9, the push rod 10, the injection tube 11, the channel 12, the first stopper 13, the first stopper 14, the second stopper 15, the second stopper 16, the third stopper 17, the third stopper 18, the development scale 19, the fixed tube 20, the fixed handle 21, the movable rod 22, the movable handle 23, the elastic member 24, the upper jaw 25, the lower jaw 26, the pivot pin 27, the tissue contact surface 28, the elongated cam groove 29, the drive pin 30, the connection rod 31, and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The utility model provides a percutaneous puncture centrum biopsy device, characterized in that, including puncture trocar (1), guide (2), along combination work sleeve pipe (3) that guide (2) were put into, be used for pressing from both sides the piece (4) of getting bone tissue or focus tissue of getting, puncture trocar (1) including puncture needle (5) that are used for the puncture to get into the centrum and puncture pipe (6) outside puncture needle (5) are located to the cover, combination work sleeve pipe (3) including inner core (7) and cover outer tube (8) outside inner core (7) are located, outer tube (8) tip be provided with sawtooth (9) that are used for separating bone tissue or focus tissue.

2. The percutaneous aspiration centrum biopsy device according to claim 1, further comprising a push rod (10) and an injection tube (11) sleeved outside the push rod (10), wherein the injection tube (11) and the push rod (10) are used for penetrating into the outer tube (8), and bone cement is injected from the injection tube (11).

3. The percutaneous aspiration cone biopsy device according to claim 1, wherein the guide member (2) is a guide wire.

4. The biopsy device according to claim 1, wherein the inner core (7) is provided with a passage (12) for the guide member (2).

5. The percutaneous aspiration centrum biopsy device according to claim 1, wherein the puncture needle (5) is provided with a first stop portion (13), the puncture tube (6) is provided with a first stop portion (14), and the puncture needle (5) penetrates into the puncture tube (6) until the first stop portion (13) is stopped by the first stop portion (14).

6. The percutaneous aspiration centrum biopsy device according to claim 1, wherein a second limiting portion (15) is arranged in the inner core (7), the outer tube (8) is provided with a second resisting portion (16), and the inner core (7) penetrates into the outer tube (8) until the second limiting portion (15) is resisted by the second resisting portion (16).

7. The percutaneous aspiration centrum biopsy device according to claim 2, wherein the push rod (10) is provided with a third limiting portion (17), the infusion tube (11) is provided with a third resisting portion (18), and the push rod (10) penetrates into the infusion tube (11) until the third limiting portion (17) is resisted by the third resisting portion (18).

8. The percutaneous aspiration centrum biopsy device according to claim 2, wherein the gripping member (4), the puncture tube (6), the outer tube (8) and the injection tube (11) are all provided with developing scales (19), and the developing scales (19) are made of developer.

9. The percutaneous aspiration centrum biopsy device according to claim 1, wherein the grasping member (4) comprises a fixed tube (20) and a fixed handle (21) fixedly connected with the fixed tube (20), a movable rod (22) is arranged in the fixed tube (20), the movable rod (22) is slidably connected in the fixed tube (20), the movable rod (22) is hinged with a movable handle (23), an elastic member (24) is arranged between the movable handle (23) and the fixed handle (21), an upper forceps head (25) and a lower forceps head (26) are arranged at the end of the fixed tube (20), the upper forceps head (25) and the lower forceps head (26) are pivotally connected together through a pivot pin (27), the upper forceps head (25) and the lower forceps head (26) both comprise a tissue contact surface (28) at the distal end part thereof, and an elongated cam groove (29) penetrating through the proximal end part of the upper tong head, wherein a drive pin (30) penetrates through the elongated cam groove (29), and the drive pin (30) can slide in the elongated cam groove (29) so as to enable the upper tong head (25) and the lower tong head (26) to perform relative pivoting motion.

10. The percutaneous aspiration centrum biopsy device according to claim 9, wherein both ends of the driving pin (30) are connected with the movable rod (22) through a connecting rod (31), the connecting rod (31) is positioned in the fixed tube (20), and both ends of the pivot pin (27) are fixedly connected with the fixed tube (20).

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