CN213883316U - Brain tissue biopsy device - Google Patents
Brain tissue biopsy device Download PDFInfo
- Publication number
- CN213883316U CN213883316U CN202022728994.2U CN202022728994U CN213883316U CN 213883316 U CN213883316 U CN 213883316U CN 202022728994 U CN202022728994 U CN 202022728994U CN 213883316 U CN213883316 U CN 213883316U
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- Prior art keywords
- tube
- negative pressure
- inner tube
- brain tissue
- biopsy device
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- 210000005013 brain tissue Anatomy 0.000 title claims abstract description 46
- 238000001574 biopsy Methods 0.000 title claims abstract description 40
- 210000000078 claw Anatomy 0.000 claims description 16
- 210000004556 brain Anatomy 0.000 claims description 9
- 210000000080 chela (arthropods) Anatomy 0.000 abstract description 7
- 206010028980 Neoplasm Diseases 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010008111 Cerebral haemorrhage Diseases 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000020658 intracerebral hemorrhage Diseases 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a brain tissue biopsy device, which comprises a forceps device and a negative pressure mechanism, wherein the forceps device comprises an outer tube and an inner tube sleeved in the outer tube, the inner tube and the outer tube are both hollow columns with openings at two ends, the front end of the inner tube is provided with a grasping forceps which can be contracted in the outer tube, and the negative pressure mechanism is connected with the tail end of the inner tube; the utility model discloses a brain tissue biopsy device overcomes the technological problem in the current brain tissue biopsy, through snatching the brain tissue of the fixed sufficient volume of pincers, combines the negative pressure mechanism of inner tube tail end to carry out the negative pressure suction, further fixes the brain tissue, under the prerequisite of guaranteeing safety, the effectual volume of acquireing that improves the brain tissue has the clinical advantage of simple and convenient easy operation and safe easy popularization.
Description
Technical Field
The utility model belongs to the field of medical equipment, more specifically the utility model relates to a brain tissue biopsy device that says so.
Background
The brain tissue lesion biopsy is an important means for determining the nature of the tumor and determining a treatment scheme, and because the brain tissue and the internal blood supply of the tumor are rich, the puncture biopsy is easy to bleed, and the diagnosis of the nature of the tumor needs to have enough tissue quantity, so how to obtain enough tissue quantity on the premise of ensuring safety is a difficult problem to be solved urgently at present. The currently common brain tissue biopsy device is a negative pressure aspirator or biopsy needle. The biopsy needle has a sharp tip, and brain tissue is obtained through violent cutting, so that although the obtaining amount of the brain tissue can be ensured, intracerebral hemorrhage is easily caused. The negative pressure suction apparatus applies negative pressure to suck and obtain the brain tissue through the hollow needle core, although the negative pressure suction apparatus is relatively safe, the brain tissue is obtained in a small quantity and is easy to break, and the diagnosis is difficult.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a brain tissue biopsy device overcomes the technological problem in the current brain tissue biopsy, through the brain tissue of the fixed sufficient volume of pincers of snatching, combines the negative pressure mechanism of inner tube tail end to carry out the negative pressure suction, further fixes the brain tissue, under the prerequisite of guaranteeing safety, the effectual volume of acquireing that improves the brain tissue has the clinical advantage of simple and convenient easy operation and safe easy popularization.
The utility model provides a brain tissue biopsy device, construct including pincers ware and negative pressure mechanism, pincers ware includes that outer tube and cover are located inner tube in the outer tube, the inner tube with the outer tube all is both ends open-ended hollow column, the front end of inner tube is provided with snatchs pincers, snatch pincers collapsible in the outer tube, negative pressure mechanism connects the inner tube tail end.
Preferably, the grabbing clamp comprises at least three clamp claws, the three clamp claws are uniformly distributed on the circumferential surface of the front end of the inner tube, the clamp claws are movably connected with the front end of the inner tube, and the clamp claws are connected with elastic pieces; when the inner pipe moves towards the tail end, the claws are compressed by the outer pipe and are retracted inwards, and the claws move into the outer pipe along with the inner pipe towards the tail end; when the inner tube is pushed out forwards, the claws are unfolded outwards under the action of the elastic element to form a grabbing shape.
Preferably, one end of the elastic part is movably connected to the outer wall of the inner pipe, and the other end of the elastic part is movably connected with the middle part of the jaw; the elastic piece can stretch out and draw back in the length direction; when the inner tube is pushed out forwards, the claws are unfolded outwards under the action of the restoring force of the elastic part to form a grabbing shape.
Preferably, the connection parts of the elastic part and the inner pipe and the connection parts of the jaws and the inner pipe are respectively provided with a first articulated shaft and a second articulated shaft, the first articulated shaft and the second articulated shaft are both vertical to the axis of the inner pipe, and the elastic part and the jaws rotate around the first articulated shaft and the second articulated shaft respectively.
Preferably, the outer diameter of the inner tube is matched with the inner diameter of the outer tube, a limiting shoulder is arranged at the tail end of the inner tube, and the outer diameter of the limiting shoulder is larger than the inner diameter of the outer tube.
Preferably, the negative pressure mechanism comprises a negative pressure pipe connected with the tail end of the inner pipe in a sealing mode, and a negative pressure plunger is screwed in the negative pressure pipe.
Preferably, an operation pipe is fixedly connected to the end, away from the inner pipe, of the negative pressure pipe, the inner diameter of the operation pipe is larger than that of the negative pressure pipe, a rotating pipe is sleeved in the operation pipe, and the rotating pipe rotates in the operation pipe; the rotating pipe is sleeved on the negative pressure plunger, and threads with opposite rotating directions are arranged on the inner wall of the rotating pipe and the outer wall of the negative pressure plunger.
Preferably, the negative pressure pipe is threadedly engaged with the inner pipe.
Preferably, the negative pressure tube is a transparent tube and scales are arranged on the outer wall of the negative pressure tube.
Preferably, the grasping forceps comprise at least three elastic forceps jaws, and all the elastic forceps jaws are uniformly and fixedly connected to the front end part of the inner tube.
The utility model discloses technical scheme's a brain tissue biopsy device's beneficial effect is: the technical problem in the existing brain tissue biopsy is overcome, the brain tissue with enough quantity is fixed through the grabbing clamp at the front end of the inner tube, then negative pressure suction is carried out through the negative pressure mechanism at the tail end of the inner tube, the brain tissue is further fixed, the acquisition quantity of the brain tissue is effectively improved on the premise of ensuring safety, and the brain tissue biopsy forceps have the clinical advantages of simplicity, convenience, easiness in operation, safety and easiness in popularization.
Drawings
FIG. 1 is a schematic structural view of a brain biopsy device according to the technical solution of the present invention,
FIG. 2 is an exploded view of a brain biopsy device according to the technical solution of the present invention,
FIG. 3 is a state diagram of a brain biopsy device according to the technical solution of the present invention before use,
fig. 4 is a schematic structural view of another embodiment of the grasping forceps.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
First, the front end and the tail end in the present technical solution are respectively placed at the inner end and the outer end of the body. As shown in FIG. 1, the rear side has a front end and the left side is a rear end. As shown in fig. 2, the lower end is a front end and the upper end is a tail end.
As shown in fig. 1 to 3, the present invention provides a brain biopsy device, which comprises a forceps 1 and a negative pressure mechanism 2. The forceps 1 comprises an outer tube 11 and an inner tube 12 sleeved in the outer tube 11, the inner tube 12 and the outer tube 11 are both in a hollow column shape with two open ends, and the negative pressure mechanism 2 is communicated with the inner tube 21 to realize the suction of tissues at the front end of the inner tube 21. The front end of the inner tube 21 is provided with a grasping forceps 15, the grasping forceps 15 can be contracted in the outer tube 11, and the negative pressure mechanism 2 is connected with the tail end of the inner tube 21.
Based on the technical scheme, before the biopsy operation, the inner tube 12 and the grasping forceps 15 at the front end of the inner tube are contracted in the outer tube 11, the front end of the outer tube is horizontal and smooth, and the tail end of the inner tube 12 is connected with the negative pressure mechanism. The outer tube, the inner tube and the grasping forceps 15 are placed in a brain biopsy area, the inner tube is pushed forwards after the front end of the outer tube reaches a designated position, the grasping forceps 15 are pushed out of the outer tube, the grasping forceps 15 are unfolded outwards to just fix brain tissues needing biopsy, at the moment, the negative pressure mechanism is manually adjusted, the brain tissues fixed by the grasping forceps 15 are sucked and fixed by the negative pressure mechanism, the brain tissues are firmly fixed at the front end of the inner tube and in the grasping forceps 15, then, the inner tube is withdrawn towards the tail end, the grasping forceps 15, the fixed brain tissues and the inner tube are compressed into the outer tube, and finally, the outer tube, the brain tissues and the like which cannot be arranged in the outer tube are withdrawn to the outside of the body together to complete biopsy.
This technical scheme overcomes the technological problem in the current brain tissue biopsy, through the fixed brain tissue of sufficient volume of the pincers 15 that snatch of inner tube front end, then carry out the vacuum aspiration through the negative pressure mechanism 2 of inner tube tail end, further fixes the brain tissue, under the prerequisite of guaranteeing safety, the effectual volume of acquireing that improves the brain tissue has the clinical advantage of simple and convenient easy operation and safe easy popularization.
As shown in fig. 2, the grasping forceps 15 includes at least three forceps jaws 14, and the three forceps jaws 14 are uniformly arranged on the circumferential surface of the front end of the inner tube 12. The jaw 14 is movably connected with the front end of the inner tube 12, and the jaw 14 is connected with an elastic piece 13. When the inner tube 12 is moved towards the trailing end, the jaws 14 are compressed and retracted inwardly by the outer tube 11, and as the inner tube 12 is moved towards the trailing end into the outer tube 11, the biopsy device is facilitated to enter or withdraw brain tissue. When the inner tube 12 is pushed forward, the jaws 14 are spread outward by the elastic member 13 to form a grasping shape, as shown in fig. 2, the grasping forceps 15 form a grasping shape, and the three jaws 14 are used for fixing brain tissue.
One end of the elastic piece 13 is movably connected on the outer wall of the inner tube 12, and the other end is movably connected with the middle part of the claw 14. The elastic member 13 is elastically stretchable in the longitudinal direction and is not bent or twisted. When the inner tube 12 is pushed forward, the claws 14 are spread outward by the restoring force of the elastic member 13, and are in a grasping shape. The automatic unfolding work of the grabbing clamp 15 is realized, the structure is simple, and the operation is convenient.
The connection parts of the elastic part 13 and the claw 14 and the inner pipe 12 are respectively provided with a first articulated shaft and a second articulated shaft which are both vertical to the axis of the inner pipe, and the elastic part 13 and the claw 14 rotate around the first articulated shaft and the second articulated shaft respectively. In the contraction and expansion of the grasping forceps 15, the jaw 14 only performs rotary motion, and the elastic piece 13 performs rotary motion and telescopic motion in the length direction, so that the motion is reliable.
The outer diameter of the inner tube 12 is matched with the inner diameter of the outer tube 11, the tail end of the inner tube 12 is provided with a limiting shoulder 16, and the outer diameter of the limiting shoulder 16 is larger than the inner diameter of the outer tube 11. The inner pipe 12 does not shake in the outer pipe 11, and the control is reliable.
The negative pressure mechanism 2 comprises a negative pressure pipe 21 which is connected with the tail end of the inner pipe 12 in a sealing way, and a negative pressure plunger 22 is screwed in the negative pressure pipe 21. The end of the negative pressure pipe 21 far away from the inner pipe 12 is fixedly connected with an operation pipe 23, and the inner diameter of the operation pipe 23 is larger than that of the negative pressure pipe 21. A rotary pipe 24 is fitted inside the operation pipe 23, and the rotary pipe 24 rotates inside the operation pipe 23. The rotating pipe 24 is sleeved on the negative pressure plunger 22, and threads with opposite rotating directions are arranged on the inner wall of the rotating pipe 24 and the outer wall of the negative pressure plunger 22.
Based on the upper technical scheme, the direction of the connecting thread between the negative pressure pipe 21 and the negative pressure plunger 22 is consistent, and the negative pressure plunger 22 rotates to realize the inlet and outlet of the negative pressure plunger 22 in the negative pressure pipe 21. The negative pressure plunger 22 is screwed out of the negative pressure tube 21 to perform negative pressure suction on the brain tissue at the front end of the inner tube. Threads with opposite rotation directions are arranged on the inner wall of the rotating pipe 24 and the outer wall of the negative pressure plunger 22, the rotating pipe 24 rotates, the position of the rotating pipe 24 relative to the operating pipe 23 is unchanged, and the negative pressure plunger 22 is driven to move outwards or inwards. When the rotating tube 24 rotates, the negative pressure tube 21 is manually driven to move towards the tail end, namely, the inner tube 12 is driven to move towards the tail end, and therefore negative pressure suction is performed on brain tissue when the inner tube is moved. When the rotating tube 24 rotates, the negative pressure plunger 22 is driven to rotate and move along the negative pressure tube 21, certain negative pressure is generated, the sucked tissue can be fixed after the negative pressure is generated, the rotating tube 24 can be stopped to rotate, meanwhile, the thread between the negative pressure plunger 22 and the negative pressure tube 21 has a certain self-locking function, the negative pressure plunger 22 is ensured not to generate reverse rotation or move under the action of no external force, the negative pressure in the inner tube 12 is kept constant, and then the whole biopsy device (the inner tube 12 and the outer tube 11) is pulled out outwards.
The negative pressure pipe 21 is screwed with the inner pipe 12 by a screw. The negative pressure tube 21 is a transparent tube and the outer wall thereof is provided with scales 25.
As shown in fig. 4, on the basis of the above-described embodiment, without changing the structure, operation principle, and the like of the inner tube, the appearance, and the negative pressure mechanism, only another implementation structure of the grasping forceps is provided, and the grasping forceps 151 of this structure is used instead of the structure of the grasping forceps 15 in the above-described embodiment.
As shown in FIG. 4, the grasping forceps 151 includes at least three elastic jaws 141 uniformly and fixedly connected to the front end of the inner tube 12, the elastic jaws 141 are arc-shaped, and all the elastic jaws 141 have a stroke of one grasping forceps 151 for grasping a tissue space. Before the biopsy operation, the inner tube 12 and the grasping forceps 151 at the front end thereof are contracted in the outer tube 11, the elastic forceps 141 are compressed inward by the outer tube 11 and are accommodated in the outer tube 11, after the front end of the outer tube reaches a designated position, the inner tube 12 is pushed forward, all the elastic forceps 141 of the grasping forceps 151 are unfolded outward under the action of self elastic restoring force to form a space for grasping tissue, after the grasping forceps 151 are unfolded, the inner tube and the grasping forceps 151 are continuously pushed forward to a biopsy tissue position, so that the grasping forceps 151 grasp tissue, and then a negative pressure mechanism and the like are started to perform the biopsy operation.
It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present disclosure. The structures, devices, and methods of operation of the present invention, not specifically described and illustrated, are generally practiced by those of ordinary skill in the art without specific recitation or limitation.
Claims (10)
1. The brain tissue biopsy device is characterized by comprising a forceps and a negative pressure mechanism, wherein the forceps comprises an outer tube and an inner tube, the inner tube is sleeved with the outer tube, the inner tube and the outer tube are hollow columns with openings at two ends, the front end of the inner tube is provided with a pair of grasping forceps, the pair of grasping forceps can be retracted into the outer tube, and the negative pressure mechanism is connected to the tail end of the inner tube.
2. The brain tissue biopsy device according to claim 1, wherein the grasping forceps comprise at least three forceps jaws, the three forceps jaws are uniformly distributed on the circumferential surface of the front end of the inner tube, the forceps jaws are movably connected with the front end of the inner tube, and the forceps jaws are connected with an elastic piece; when the inner pipe moves towards the tail end, the claws are compressed by the outer pipe and are retracted inwards, and the claws move into the outer pipe along with the inner pipe towards the tail end; when the inner tube is pushed out forwards, the claws are unfolded outwards under the action of the elastic element to form a grabbing shape.
3. The brain biopsy device of claim 2, wherein one end of the elastic member is movably connected to the outer wall of the inner tube, and the other end of the elastic member is movably connected to the middle of the jaw; the elastic piece can stretch out and draw back in the length direction; when the inner tube is pushed out forwards, the claws are unfolded outwards under the action of the restoring force of the elastic part to form a grabbing shape.
4. The brain biopsy device of claim 3, wherein the connection between the elastic member and the jaw and the inner tube is provided with a first articulation axis and a second articulation axis, respectively, the first articulation axis and the second articulation axis being perpendicular to the axis of the inner tube, the elastic member and the jaw rotating about the first articulation axis and the second articulation axis, respectively.
5. The brain biopsy device of claim 1, wherein the outer diameter of the inner tube and the inner diameter of the outer tube are adapted, and the tail end of the inner tube is provided with a limit shoulder, wherein the outer diameter of the limit shoulder is larger than the inner diameter of the outer tube.
6. The brain tissue biopsy device of claim 1, wherein the negative pressure mechanism comprises a negative pressure tube sealingly connected to the trailing end of the inner tube, the negative pressure tube having a negative pressure plunger threaded therein.
7. The device as claimed in claim 6, wherein the negative pressure tube is fixed with an operation tube at a end away from the inner tube, the inner diameter of the operation tube is larger than that of the negative pressure tube, a rotation tube is sleeved in the operation tube, and the rotation tube rotates in the operation tube; the rotating pipe is sleeved on the negative pressure plunger, and threads with opposite rotating directions are arranged on the inner wall of the rotating pipe and the outer wall of the negative pressure plunger.
8. The brain biopsy device of claim 6, wherein the negative pressure tube is threadably engaged with the inner tube.
9. The brain tissue biopsy device of claim 6, wherein the negative pressure tube is a transparent tube and the outer wall is provided with graduations.
10. The brain tissue biopsy device of claim 1, wherein the grasping forceps comprise at least three elastic forceps jaws, and all the elastic forceps jaws are uniformly fixed at the front end of the inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022728994.2U CN213883316U (en) | 2020-11-23 | 2020-11-23 | Brain tissue biopsy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022728994.2U CN213883316U (en) | 2020-11-23 | 2020-11-23 | Brain tissue biopsy device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213883316U true CN213883316U (en) | 2021-08-06 |
Family
ID=77121378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022728994.2U Expired - Fee Related CN213883316U (en) | 2020-11-23 | 2020-11-23 | Brain tissue biopsy device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213883316U (en) |
-
2020
- 2020-11-23 CN CN202022728994.2U patent/CN213883316U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210806 |