CN215384432U - Flushable suction stripping knife for brain tumor resection - Google Patents
Flushable suction stripping knife for brain tumor resection Download PDFInfo
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- CN215384432U CN215384432U CN202121732069.5U CN202121732069U CN215384432U CN 215384432 U CN215384432 U CN 215384432U CN 202121732069 U CN202121732069 U CN 202121732069U CN 215384432 U CN215384432 U CN 215384432U
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Abstract
The utility model relates to a flushable suction dissecting knife for excising brain tumors, which comprises an outer tube and an inner tube, wherein the side wall of the rear end of the outer tube is provided with a notch; the front end of the inner pipe is connected with two shearing arms, each shearing arm comprises an end blade part, a side shearing part and a matching part, the first shearing arm is rotatably assembled with the inner pipe, and the matching part of the first shearing arm is circumferentially assembled with the front end of the outer pipe in a rotation stopping manner; the first shear arm and the second shear arm are both arranged on one radial side of the axis of the inner pipe in an extending manner; the end blade part of the shear arm is provided with a stripping position; a locking mechanism is arranged inside the rear end of the outer pipe; the inner pipe is internally provided with a water outlet channel and a suction channel, the side wall of the second shearing arm is provided with a water outlet, the side wall of the first shearing arm is provided with a suction port, and the rear side of the inner pipe is provided with a water inlet interface and a negative pressure interface, so that the integrated design of shearing and stripping is realized.
Description
Technical Field
The utility model relates to the field of brain tumor surgical instrument equipment, in particular to a flushable suction dissecting knife for excising brain tumors.
Background
Many factors need to be considered when removing brain tumor, and the factors are complex processes of dissociative stripping of tumor and normal brain tissue under the cooperation of a plurality of persons and a plurality of instruments. When in excision, an appliance is needed to prop open the tumor and the normal tissue, the excision or the stripper is used for dissociation from the propped gap, and when cerebrospinal fluid or blood blocks the visual field on the excision surface, an aspirator is needed to be used for suction to remove the blood, so that the clear operative field is kept. In order to avoid the water loss and drying of normal brain tissues, the brain tissues are continuously flushed with water for moisturizing. When in tumor resection, a plurality of people are needed to cooperate, and a plurality of people are needed to take the suction apparatus, the flushing apparatus, the tumor dissecting knife, the tumor dissecting device, the spreader or the tumor forceps respectively to extract the tumor and expose the tumor to keep a gap between the tumor and normal tissues. Because the brain dissects complicacy and the risk factor theory incision of functional damage is all narrower and small during this operation, enters a plurality of apparatus simultaneously and blocks the sight, the tumour excision of being not convenient for, and the actual incision is than theoretical incision big, makes patient's incision big. Most of clinical operations are performed by two persons and four hands, which not only wastes manpower, but also needs to be run in with an assistant for a long time to synchronously coordinate the operations.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a flushable suction scalpel for brain tumor resection, which solves the problems that in the prior art, the brain tumor resection needs to be operated by a plurality of instrument combinations simultaneously or alternately, the incision is large, the infection chance is increased, and the operation time is long.
In order to solve the problems, the flushable suction scalpel for excising the brain tumor adopts the following technical scheme:
the flushable suction stripping knife for excising the brain tumor comprises an outer tube and an inner tube which are mutually guided, spliced and rotatably assembled, wherein a notch is formed in the side wall of the rear end of the outer tube, a first holding arm which penetrates through the notch and extends outwards is fixedly connected to the side wall of the inner tube, a second holding arm is connected to the side wall of the rear end of the outer tube, and elastic connecting pieces which enable the first holding arm and the second holding arm to open oppositely are connected to the tail ends of the first holding arm and the second holding arm; the front end of the inner pipe is connected with two shearing arms, each shearing arm comprises an end blade part at the front end, a middle side shearing part and a matching part at the rear side, the two shearing arms are respectively a first shearing arm sleeved outside the front end of the inner pipe and a second shearing arm extending to the front end of the inner pipe, the first shearing arm is rotatably assembled with the inner pipe, and the matching part of the first shearing arm and the front end of the outer pipe are circumferentially assembled in a rotation stopping manner so as to enable the two shearing arms to be relatively closed when the first holding arm and the second holding arm are relatively close; the first shearing arm and the second shearing arm are arranged on one radial side of the axis of the inner tube in an extending mode, so that when the second shearing arm rotates around the axis of the inner tube, the side shearing parts of the two shearing arms close at the same radial side of the inner tube to shear the brain tumor; in the process of relatively closing the opening of the two shearing arms, the end blade part of the first shearing arm and the end blade part of the second shearing arm are provided with stripping positions which can be relatively and sequentially spliced to form a stripping blade for cutting brain tumors; a locking mechanism which is matched with the inner pipe in a locking way to prevent the inner pipe from being separated from the outer pipe forwards is arranged in the rear end of the outer pipe; the water outlet channel and the suction channel are arranged in the inner pipe, the water outlet communicated with the water outlet channel is formed in the side wall of the second shearing arm, the suction port communicated with the suction channel is formed in the side wall of the first shearing arm, the water inlet port and the negative pressure port are formed in the rear side of the inner pipe, and the avoidance groove is formed in the position, corresponding to the water inlet port and the negative pressure port, of the outer pipe.
Furthermore, the water inlet channel comprises a connecting long hole formed in the side wall of the front end of the inner pipe and a water inlet formed in the first shear arm, the water inlet is communicated with the connecting long hole, and sealing rings which are plugged at the front side and the rear side of the connecting long hole are arranged between the matching portion of the first shear arm and the inner pipe.
Furthermore, all be connected with the connection swivel nut of radial extension on water inlet and the negative pressure interface, when the inner tube rotated, the connection swivel nut was in keeping away the inslot circumference and is floated.
Furthermore, the rear end of the inner tube is provided with elastic claws capable of being radially opened and closed, the locking mechanism comprises a middle barrel which is rotatably arranged in the outer tube and is in front-back stop limit fit, the inner side wall of the middle barrel is provided with a clamping groove, the outer side wall of each elastic claw is provided with a stop part which is used for extending into the middle barrel and being in front-back stop with the clamping groove, the rear end of the outer tube is movably inserted with a locking rod in a guiding mode, the locking rod is provided with a locking position which is inserted between the two elastic claws to radially push the stop part into the clamping groove in the front-back moving process, the locking rod is further provided with an unlocking position which is moved backwards to enable the clamping groove to be separated from the stop part to enable the inner tube to be separated forwards relative to the outer tube, a spring which applies acting force moving towards the locking position to the locking rod is connected between the locking rod and the outer tube, and the rear end of the locking rod is connected with an unlocking handle.
Furthermore, the front end of the outer tube is provided with a rotation stopping groove, the rear end of the matching part of the first shearing arm is provided with a convex block, and the convex block is in splicing fit with the rotation stopping groove so as to realize circumferential rotation stopping assembly of the outer tube and the first shearing arm.
The utility model has the following beneficial effects: compared with the prior art, in the flushable suction dissecting knife for excising the brain tumor, the first shearing arm and the second shearing arm are respectively provided with the water outlet channel and the suction channel in the actual operation process, so that the cleaning of the visual field in the operation process can be ensured, all instruments in the operation are reduced, the incision is more minimally invasive, the operation infection rate is reduced, and the operation time is shortened; furthermore, the tumor can be conveniently cut by adopting a scissors structure, the butt joint and the splicing of the two end edge parts are positioned at the peeling position, and the convex arc-shaped cutting edge structure is convenient for cutting, peeling and cutting the tumor. The integrated design of shearing and stripping is realized.
Drawings
In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings needed to be used in the embodiment will be briefly described as follows:
FIG. 1 is a schematic structural view of an embodiment of the washable suction scalpel for brain tumor resection according to the present invention;
FIG. 2 is a half-sectional view of FIG. 1;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
FIG. 4 is an enlarged view of a portion B of FIG. 2;
FIG. 5 is an expanded view of the two scissor arms of FIG. 1;
fig. 6 is a schematic view of the state in which the end blade portion is in the peeling position in fig. 5.
Description of reference numerals: 1-an outer tube; 2-inner tube; 3-a first scissor arm; 4-a second scissor arm; 5-a mating portion; 6-side cutting part; 7-end blade part; 8-notch; 9-a first holding arm; 10-a second holding arm; 11-an elastic connecting piece; 12-a rotation stopping groove; 13-a bump; 14-a latch; 15-a stop; 16-an intermediate cylinder; 17-a card slot; 18-locking bar; 19-a spring; 20-an unlocking handle; 21-a water outlet channel; 22-a suction channel; 23-a water outlet; 24-a suction port; 25-connecting the long hole; 26-a water inlet; 27-a sealing ring; 28-connecting screw sleeve.
Detailed Description
In order to make the technical purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are further described below with reference to the accompanying drawings and specific embodiments.
The specific embodiment of the washable suction scalpel for excising brain tumors is shown in fig. 1 to 6, and comprises an outer tube 1 and an inner tube 2 which are mutually inserted and rotatably assembled in a guiding manner, wherein the outer tube 1 and the inner tube 2 are both hollow tubular structures and are made of stainless steel or other metals or alloys with strong hardness, the inner hole of the outer tube 1 is a circular hole, the axis extending direction of the outer tube 1 is defined as the front-back direction, and the inner tube 2 is inserted into the outer tube 1 from front to back so as to realize guiding insertion.
A notch 8 is formed in the side wall of the rear end of the outer tube 1, in the embodiment, the notch 8 is a rectangular groove, a first holding arm 9 which penetrates through the notch 8 and extends outwards is fixedly connected to the side wall of the inner tube 2, a second holding arm 10 is connected to the side wall of the rear end of the outer tube 1, and the tail ends of the first holding arm 9 and the second holding arm 10 are connected with an elastic connecting piece 11 which enables the first holding arm 9 and the second holding arm 10 to be opened back to back; the thickness of the circumferential direction of the first holding arm 9 is smaller than the size of the circumferential direction of the notch 8, so that the first holding arm 9 can swing in the notch 8 along the circumferential direction and drive the inner tube 2 to rotate in the outer tube 1 in the swinging process.
Two shearing arms are connected to the front end of inner tube 2, shearing arm includes the end blade portion 7 of front end, the cooperation portion 5 of middle side shearing portion 6 and rear side, two shearing arms are the first shearing arm 3 of cover outside the front end of inner tube 2 respectively, and extend and set up in the second shearing arm 4 of the front end of inner tube 2, first shearing arm 3 rotates the assembly with inner tube 2, the cooperation portion 5 of first shearing arm 3 and the front end circumference spline assembly of outer tube 1 are equipped with and make first gripping arm 9 and second gripping arm 10 make even a shearing arm close to relatively when being close to relatively, specifically the front end of outer tube 1 is equipped with spline groove 12, the rear end of the cooperation portion 5 of first shearing arm 3 is equipped with lug 13, lug 13 pegs graft the cooperation with spline groove 12 in order to realize the circumference spline assembly of outer tube 1 with first shearing arm 3.
The matching part 5 of the first shear arm 3 is a sleeve-shaped section sleeved on the inner pipe 2, a front limit position and a rear limit position are arranged between the matching part and the inner pipe 2, and the matching part and the inner pipe are rotatably assembled, so that the inner pipe 2 can rotate relative to the first shear arm 3, and the first shear arm 3 is integrally positioned outside the outline range of the outer side wall of the inner pipe 2, namely positioned on one radial side of the inner pipe 2; the second shearing arm 4 is a fixed structure fixed at the front end of the inner tube 2 and is also located on one side in the radial direction of the axis of the inner tube 2, so that the second shearing arm 4 can be driven to rotate when the inner tube 2 rotates, the swing amplitude of the second shearing arm 4 is located within the range of the circumferential outline of the inner side wall of the first shearing arm 3, the path area is small, and small-space operation is facilitated. The positive side in circumference of first shearing arm 3 is side shearing portion 6, and the opposite side in circumference of second shearing arm 4 is side shearing portion 6, and when first shearing arm 3 and second shearing arm 4 moved relatively, two side shearing portions 6 were close to relatively and were realized closing the mouth, kept away from mutually the back and realized the opening.
The first shearing arm 3 and the second shearing arm 4 are both arranged on one radial side of the axis of the inner tube 2 in an extending mode, so that when the second shearing arm 4 rotates around the axis of the inner tube 2, the side shearing parts 6 of the two shearing arms close at the same radial side of the inner tube 2 to shear brain tumors; in the process of relatively closing the two shear arms, the end blade part 7 of the first shear arm 3 and the end blade part 7 of the second shear arm 4 are provided with stripping positions which can be relatively sequentially spliced to form a stripping blade for cutting brain tumors; when the end blade part 7 is in the peeling position, as shown in the figure, at this moment, the circumferential head butt joint of the two end blade parts 7 is spliced, the integrally formed arc-shaped blade protruding forwards is formed, at this moment, an operator can scratch the corresponding tissues or tumors and the like in a mode of swinging the outer tube 1, and the operation is convenient.
In addition, a locking mechanism which is matched with the inner pipe 2 in a locking way so as to prevent the inner pipe 2 from being separated from the outer pipe 1 forwards is arranged inside the rear end of the outer pipe 1; mainly, the rear end of the inner tube 2 is provided with an elastic claw 14 capable of being radially opened and closed, the locking mechanism comprises a middle tube 16 which is rotatably arranged in the outer tube 1 and is in front-back stop limit fit, the inner side wall of the middle tube 16 is provided with a clamping groove 17, the outer side wall of the elastic claw 14 is provided with a stopping part 15 which is used for extending into the middle tube 16 and stopping with the clamping groove 17 in front-back limit, the rear end of the outer tube 1 is movably inserted with a locking rod 18 in a guiding manner, the locking rod 18 has a locking position which is inserted between the two elastic claws 14 in the front-back moving process so as to radially push the stopping part 15 into the clamping groove 17, the locking rod also has an unlocking position which is moved backwards so as to separate the clamping groove 17 from the stopping part 15 and enable the inner tube 2 to be separated forwards relative to the outer tube 1, a spring 19 which applies acting force moving towards the locking position to the locking rod 18 is connected between the locking rod 18 and the outer tube 1, and the rear end of the locking rod 18 is connected with an unlocking handle 20. In the actual assembly process, the unlocking handle 20 is pulled backwards, the spring 19 is compressed at the moment, the locking rod 18 moves to the unlocking position, then the inner tube 2 is inserted into the outer tube 1 from front to back, the elastic claw 14 at the rear end of the inner tube 2 relatively approaches to the middle barrel 16 and extends into the middle barrel to move to the clamping groove 17, the locking rod 18 radially expands outwards, the spring 19 releases energy after the unlocking handle 20 is unlocked, the locking rod 18 is forced to move to the locking position, the locking rod 18 is inserted between the two elastic claws 14, the stopping part 15 of the elastic claw 14 is tightly attached to the clamping groove 17, and the anti-falling locking of the inner tube 2 is achieved.
In addition, a water outlet channel 21 and an attraction channel 22 are arranged in the inner tube 2, a water outlet 23 communicated with the water outlet channel 21 is formed in the side wall of the second shearing arm 4, an attraction port 24 communicated with the attraction channel 22 is formed in the side wall of the first shearing arm 3, a water inlet port and a negative pressure port are formed in the rear side of the inner tube 2, and an avoiding groove is formed in the position, corresponding to the water inlet port and the negative pressure port, of the outer tube 1.
Preferably, the water inlet channel comprises a connection long hole 25 arranged on the side wall of the front end of the inner tube 2, and further comprises a water inlet 26 arranged on the first shear arm 3, the water inlet 26 is communicated with the connection long hole 25, and a sealing ring 27 which is plugged at the front side and the rear side of the connection long hole 25 is arranged between the matching portion 5 of the first shear arm 3 and the inner tube 2.
Preferably, the water inlet connector and the negative pressure connector are both connected with radially extending connecting threaded sleeves 28, and when the inner pipe 2 rotates, the connecting threaded sleeves 28 float circumferentially in the avoiding groove.
Finally, it should be noted that: the above embodiments are merely illustrative and not restrictive of the technical solutions of the present invention, and any equivalent substitutions and modifications or partial substitutions made without departing from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. The flushable suction dissecting knife for excising the brain tumor is characterized by comprising an outer tube and an inner tube which are mutually guided, spliced and rotatably assembled, wherein the side wall of the rear end of the outer tube is provided with a notch;
the front end of the inner pipe is connected with two shearing arms, each shearing arm comprises an end blade part at the front end, a middle side shearing part and a matching part at the rear side, the two shearing arms are respectively a first shearing arm sleeved outside the front end of the inner pipe and a second shearing arm extending to the front end of the inner pipe, the first shearing arm is rotatably assembled with the inner pipe, and the matching part of the first shearing arm and the front end of the outer pipe are circumferentially assembled in a rotation stopping manner so as to enable the two shearing arms to be relatively closed when the first holding arm and the second holding arm are relatively close;
the first shearing arm and the second shearing arm are arranged on one radial side of the axis of the inner tube in an extending mode, so that when the second shearing arm rotates around the axis of the inner tube, the side shearing parts of the two shearing arms close at the same radial side of the inner tube to shear the brain tumor; in the process of relatively closing the opening of the two shearing arms, the end blade part of the first shearing arm and the end blade part of the second shearing arm are provided with stripping positions which can be relatively and sequentially spliced to form a stripping blade for cutting brain tumors;
a locking mechanism which is matched with the inner pipe in a locking way to prevent the inner pipe from being separated from the outer pipe forwards is arranged in the rear end of the outer pipe;
the water outlet channel and the suction channel are arranged in the inner pipe, the water outlet communicated with the water outlet channel is formed in the side wall of the second shearing arm, the suction port communicated with the suction channel is formed in the side wall of the first shearing arm, the water inlet port and the negative pressure port are formed in the rear side of the inner pipe, and the avoidance groove is formed in the position, corresponding to the water inlet port and the negative pressure port, of the outer pipe.
2. The irrigated suction scalpel for brain tumor resection according to claim 1, wherein the water inlet channel comprises a connection slot hole arranged on the front end side wall of the inner tube, and further comprises a water inlet arranged on the first shear arm, the water inlet is communicated with the connection slot hole, and sealing rings plugged at the front side and the rear side of the connection slot hole are arranged between the matching part of the first shear arm and the inner tube.
3. The irrigated suction dissector knife for brain tumor resection of claim 2, wherein the water inlet port and the negative pressure port are both connected with radially extending connecting thread sleeves, and when the inner tube rotates, the connecting thread sleeves float circumferentially in the avoiding groove.
4. The irrigated suction scalpel for removing brain tumors according to any one of claims 1 to 3, wherein the inner tube has radially openable and closable elastic claws at the rear end thereof, the locking mechanism comprises an intermediate tube rotatably disposed inside the outer tube and adapted to be stopped in a front-to-back manner, the intermediate tube has a slot on an inner side wall thereof, the elastic claws have stoppers on an outer side wall thereof for extending into the intermediate tube and stopping the front-to-back movement of the slot, the rear end of the outer tube is movably inserted with a locking lever, the locking lever has a locking position inserted between the two elastic claws to radially push the stoppers into the slot during the front-to-back movement thereof, and further has an unlocking position moved backward to disengage the slot from the stopper and disengage the inner tube forward relative to the outer tube, and a spring is connected between the locking lever and the outer tube for applying a force to the locking lever to move forward toward the locking position, the rear end of the lock rod is connected with an unlocking handle.
5. The irrigated suction dissector knife for brain tumor resection of any one of claims 1-3, wherein the front end of the outer tube is provided with a rotation stopping groove, and the rear end of the matching part of the first shearing arm is provided with a lug which is in plug-in fit with the rotation stopping groove to realize circumferential rotation stopping assembly of the outer tube and the first shearing arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121732069.5U CN215384432U (en) | 2021-07-28 | 2021-07-28 | Flushable suction stripping knife for brain tumor resection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121732069.5U CN215384432U (en) | 2021-07-28 | 2021-07-28 | Flushable suction stripping knife for brain tumor resection |
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| Publication Number | Publication Date |
|---|---|
| CN215384432U true CN215384432U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121732069.5U Active CN215384432U (en) | 2021-07-28 | 2021-07-28 | Flushable suction stripping knife for brain tumor resection |
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| Country | Link |
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| CN (1) | CN215384432U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114404682A (en) * | 2022-01-20 | 2022-04-29 | 南京医科大学第二附属医院 | Intelligent exposable aspirator for single-hole robot |
-
2021
- 2021-07-28 CN CN202121732069.5U patent/CN215384432U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114404682A (en) * | 2022-01-20 | 2022-04-29 | 南京医科大学第二附属医院 | Intelligent exposable aspirator for single-hole robot |
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