CN220442684U - Multi-sampling biopsy device - Google Patents

Abstract

The present utility model relates to a multisampling biopsy device comprising: the clamp body mechanism comprises a clamp cup and a clamp seat which are movably connected, and a collection cavity and a storage cavity which are adjacent and communicated are formed in the clamp body mechanism; the telescopic piece is arranged in the clamp body mechanism and is provided with an acquisition part and a storage part, and the telescopic piece is driven to reciprocate in the acquisition cavity and the storage cavity so as to enable the acquisition part to acquire tissues and the storage part to store tissues; and the guide piece is arranged on the periphery of the telescopic piece and used for guiding the telescopic piece to reciprocate relative to the clamp body mechanism in the far and near end direction. Compared with the prior art, the utility model can finish multiple sampling by only one lens insertion, has the advantages of multiple sampling, simplified operation, high operation efficiency, greatly shortened time, reduced pain of patients, sanitation and safety, high biopsy accuracy and the like, and also has the advantages of high sampling stability, accurate position, simple multiple sampling process, avoiding misoperation, smoothness, no clamping and the like in the process of multiple sampling.

Description

Multi-sampling biopsy device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a multi-sampling biopsy device.

Background

Soft endoscopic surgery is becoming an increasingly common surgical mode in the fields of the current digestive tract, urinary tract, heart and lung and the periphery of blood vessels due to its minimal trauma and rapid recovery. In preoperative diagnosis of endoscopes, biopsy procedures are often required to be performed on suspected lesions in order to perform pathological analysis. The existing mode is mainly to grasp focus tissues through a biopsy forceps with a flexible shaft.

At present, when biopsy forceps and similar medical instruments are operated, most of the biopsy forceps and similar medical instruments can only finish one-time sampling by one-time insertion, and in actual clinical application, multiple times of sampling and multiple tissue acquisition are often needed, so that repeated operation of withdrawing and inserting the forceps is needed when the traditional biopsy forceps are adopted for multiple times of sampling, and the biopsy forceps have the problems of multiple times of single sampling, complex operation, low operation efficiency, long time, pain of patients, easiness in infection of germs and the like.

In order to solve the technical problems, the utility model provides the multi-sampling biopsy device which can finish multiple sampling by only one lens insertion without repeated lens withdrawal and lens insertion operation, has the advantages of multiple sampling, simplified operation, high operation efficiency, greatly shortened time, reduced pain of patients, sanitation and safety, high biopsy accuracy and the like, and has the advantages of high sampling stability, accurate position, simple multi-sampling process, avoiding misoperation, smoothness, no clamping and the like in the process of multiple sampling.

Disclosure of Invention

The utility model aims to provide a multi-sampling biopsy device which can finish multiple sampling by only one lens insertion without repeated lens withdrawal and lens insertion operation, has the advantages of multiple sampling, simplified operation, high operation efficiency, greatly shortened time, pain reduction of patients, sanitation and safety, high biopsy accuracy and the like, and also has the advantages of high sampling stability, accurate position, simple multi-sampling process, misoperation avoidance, smoothness, no clamping and the like in the process of multiple sampling.

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

a multi-sampling biopsy device comprising:

the clamp body mechanism comprises a clamp cup and a clamp seat which are movably connected, wherein an acquisition cavity and a storage cavity which are adjacent and communicated are formed in the clamp body mechanism, and the acquisition cavity is positioned at the far end of the storage cavity;

the telescopic piece is arranged in the clamp body mechanism and is provided with a collecting part and a storing part, the collecting part is positioned at the far end of the storing part, and the telescopic piece is driven to reciprocate in the collecting cavity and the storing cavity so as to enable the collecting part to collect tissues and the storing part to store tissues;

the guide piece is arranged on the periphery of the telescopic piece and used for guiding the telescopic piece to reciprocate relative to the clamp body mechanism in the far and near end direction;

when the telescopic piece is displaced towards the distal end, the distal end of the telescopic piece can protrude out of the distal end of the clamp cup to prop the clamp cup open, and tissues at the collecting part are stopped in the clamp cup, so that the tissues are displaced towards the proximal end of the telescopic piece to the storing part.

The collection cavity and the storage cavity in the clamp mechanism are communicated (no matter whether the clamp cup is opened or closed), so that the telescopic piece and tissues on the telescopic piece can be smoothly and unimpeded to reciprocate in the clamp mechanism; the guide piece ensures the stability and the directionality of the displacement of the telescopic piece; the tissue obtained after multiple sampling is orderly arranged on the telescopic piece, so that the user can collect the marks conveniently; the utility model can complete multiple sampling by only one time of inserting the lens, has the advantages of multiple sampling, simplified operation, high operation efficiency, greatly shortened time, reduced pain of patients, sanitation and safety, high biopsy accuracy and the like, and also has the advantages of high sampling stability, accurate position, simple multiple sampling process, avoiding misoperation, smoothness, no clamping and the like in the process of multiple sampling.

Preferably, the interior of the clamp cup includes at least the collection chamber, and the storage chamber is formed between the proximal end of the collection chamber and the proximal end or near the proximal end of the clamp base.

Ensuring that the storage chamber is sufficiently large.

Preferably, the collecting cavity corresponds to a collecting part with a telescopic part, and the storing cavity corresponds to a storing part with a telescopic part.

Preferably, the guide is disposed in the jaw body mechanism.

Preferably, the guide is disposed at or near a proximal end within the jaw housing.

Preferably, the clamp cup includes at least the collection chamber therein, and the storage chamber is formed between a proximal end of the collection chamber and a distal end of the guide.

Preferably, the telescopic member is slidably disposed through the guide member.

Preferably, the telescopic member is provided with a first limiting member positioned on the distal end side of the guide member, or/and a second limiting member positioned on the proximal end side of the guide member.

The first limiting piece and the second limiting piece can respectively limit the travel of the displacement of the telescopic piece in a unidirectional manner, and when the first limiting piece and the second limiting piece are combined, the travel of the telescopic piece can be limited in a bidirectional manner, so that a user can conveniently judge and control sampling, the efficiency is improved, and the sampling safety is improved; wherein, the restriction in the distal direction can avoid the telescoping member distal end to excessively protrude and damage more inner layer tissue, and the restriction in the proximal direction avoids the condition that the tissue sample is squeezed, dropped off by other components, etc.

Preferably, the guide is disposed on the outer periphery of the telescopic member, and the outer periphery of the guide is slidably connected with the inside of the caliper body mechanism

Preferably, the clamp body mechanism is internally connected with a first limiting piece positioned at the distal end side of the guide piece, or/and a second limiting piece positioned at the proximal end side of the guide piece.

Preferably, in the initial state, the distal end of the telescoping member is disposed within and adjacent to the distal end of the forceps cup and is adapted to access tissue after the forceps cup is opened.

After the forceps cup is opened, the forceps cup can directly enter tissues without other operations, and the operation process is simple.

Preferably, the telescopic member is a needle, and the distal end of the telescopic member is a needle tip.

And the acquisition efficiency is improved.

Preferably, the periphery of the telescopic piece is provided with anti-slip protrusions and/or anti-slip depressions.

Ensuring that the tissue is stably fixed on the telescopic member

Preferably, the pliers seat comprises a pipe seat, two connecting columns are formed by extending the pipe seat towards the far end, the pliers cup comprises a pair of connected cup bodies and connecting pieces, the two cup bodies are respectively and movably connected to the two connecting columns through the connecting pieces, and the connected cup bodies, the connecting pieces and the connecting columns are positioned on the same side.

Ensure the penetration between the collection cavity and the storage cavity to be unobstructed.

Preferably, the length of the stem is greater than the length of the stem in the distal and proximal directions.

The storage cavity part sealed in the circumferential direction is ensured to be relatively long, and the tissue is not easy to pollute.

Preferably, the clamp cup comprises a cup body, and the proximal end of the cup body is open, so that the collection cavity and the storage cavity are communicated without a stop.

Preferably, the cup mouth part of the cup body comprises a distal end cutting edge, side cutting edges extending proximally to two sides, and an opening at the proximal end, wherein the end cutting edges and the side cutting edges are arranged continuously.

Preferably, the telescopic driving mechanism comprises a sheath tube, the distal end of the sheath tube is connected with the proximal end of the clamp body mechanism, and the telescopic driving mechanism is internally provided with a telescopic driving member connected with the proximal end of a telescopic member and an opening and closing driving member connected with the proximal end of a clamp cup and capable of opening and closing the telescopic driving member.

Preferably, the telescopic member and the telescopic driving member are detachably connected.

And after the sampling for multiple times is convenient, taking down all samples.

Preferably, the telescopic member and the telescopic driving member are detachably connected by a release member.

Preferably, the release member is provided at least on a portion of the telescoping member located on the proximal side of the guide member, and the release member may serve as a second stop member for limiting the distal displacement travel of the telescoping member.

The release piece and the second limiting piece are combined into a whole, so that the structure is simplified.

Preferably, a first stopper is provided at least on a portion of the expansion element located on the distal end side of the guide member.

Preferably, the telescopic members and the telescopic driving members are detachably connected through connecting pipes; the telescopic part and the connecting pipe are in interference fit and can reversely prop against each other through the first limiting part and the guide part until the connecting pipe releases the telescopic part, or/and the connecting pipe and the telescopic driving part are in interference fit and can reversely prop against each other through the first limiting part and the guide part until the telescopic part is released through the release of the connecting pipe and the telescopic driving part.

Preferably, the guide is disposed on the jaw body mechanism with its proximal end in contact with the distal end of the sheath.

The guide piece contacts with the sheath tube, so that the stability of the guide piece can be improved, and the loosening of the guide piece caused by frequent reciprocating displacement of the telescopic piece is avoided.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a multi-sampling biopsy device and a multi-sampling biopsy method, which can finish multiple sampling by only one lens insertion without repeated lens withdrawal and lens insertion operation, and have the advantages of multiple sampling, simplified operation, high operation efficiency, greatly shortened time, reduced pain of patients, sanitation and safety, high biopsy accuracy and the like.

Drawings

FIG. 1 is a schematic view of a portion of a multi-sampling biopsy device according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the overall structure of the pincer cup of FIG. 1;

FIG. 3 is a schematic view of the overall structure of the telescopic member according to the embodiment of the present utility model;

FIG. 4 is a schematic diagram of the internal structure of a multi-sampling biopsy device according to an embodiment of the present utility model, also shown as step S1;

FIG. 5 is a schematic diagram of the internal structure of a multi-sampling biopsy device according to an embodiment of the present utility model, also shown as step S2;

FIG. 6 is a schematic diagram of the internal structure of a multi-sampling biopsy device according to an embodiment of the present utility model, also shown as step S3;

FIG. 7 is a schematic diagram of the internal structure of a multi-sampling biopsy device according to an embodiment of the present utility model, also shown as step S4;

FIG. 8 is a schematic diagram of the internal structure of a multi-sampling biopsy device according to an embodiment of the present utility model, also shown as step S5;

FIG. 9 is a schematic diagram of the internal structure of a multi-sampling biopsy device according to an embodiment of the present utility model, also shown as step S6;

reference numerals:

the forceps device comprises a forceps mechanism 100, a forceps cup 110, a cup 111, an end cutting edge 1111, a side cutting edge 1112, an opening 1113, a connector 112, a forceps holder 120, a tube holder 121, a connecting column 122, a collection chamber 130, a storage chamber 140, a telescopic member 150, a barb structure 151, a collection portion 152, a storage portion 153, a first stopper 154, a second stopper 155, a guide 160, a sheath mechanism 200, a sheath 210, a telescopic driving member 211, a driving member 212 for opening and closing, and a tissue 300.

Detailed Description

The utility model will now be described in more detail with reference to the accompanying drawings, to which it should be noted that the description is given by way of illustration only and not by way of limitation. Various embodiments may be combined with one another to form further embodiments not shown in the following description.

It should be noted that, in fig. 4 to 8, except for the telescopic member 150 and the clamp cup 110, the rest is a cross-sectional view, and in order to more clearly show the moving states of the telescopic member 150 and the tissue in the clamp cup 110, a perspective effect is provided here (wherein fig. 1 to 3 are normally shown); the distal and proximal ends represent two directions; the collection chamber 130, the storage chamber 140, the collection unit 152, and the storage unit 153 are located at positions corresponding to the components within the dashed line frame.

In one embodiment of the present utility model, a multi-sampling biopsy device is provided, see FIGS. 1-9, comprising:

the forceps body mechanism 100 comprises a hinged forceps cup 110 and a forceps holder 120, wherein a collection cavity 130 and a storage cavity 140 which are adjacently and penetratingly arranged are formed in the forceps body mechanism, the collection cavity 130 is positioned at the far end of the storage cavity 140, the collection cavity 130 is used for containing newly collected tissues, and the storage cavity 140 is used for storing the collected tissues;

the telescopic member 150, specifically, a needle-shaped body with a needle-shaped distal end and a barb structure 151 arranged on the periphery, is configured in the forceps mechanism 100, and is provided with a collection part 152 and a storage part 153, wherein the collection part 152 is positioned at the distal end of the storage part 153, and the telescopic member 150 is driven to reciprocate in the collection cavity 130 and the storage cavity 140, so that the collection part 152 collects tissues and the storage part 153 stores tissues;

the guiding piece 160 is fixedly connected to the position, close to the proximal end, in the clamp seat 120, and the telescopic piece 150 is slidably arranged through the guiding piece 160, so that the guiding piece 160 can guide the telescopic piece 150 to reciprocate relative to the clamp body mechanism 100 in the distal and proximal directions;

a sheath mechanism 200, wherein the distal end of the sheath mechanism 200 is connected to the proximal end of the forceps mechanism 100, and the proximal end is connected to an operating mechanism (not shown), the sheath mechanism specifically comprises a sheath 210 in contact with the proximal end of the guide 160, a telescoping driving member 211 connected to the proximal end of the telescoping member 150 and a driving member 212 connected to the proximal end of the forceps cup 110 for opening and closing are provided in the sheath 210, and the telescoping driving member 2114 and the proximal end of the telescoping driving member 2124 are connected to the operating mechanism;

when the telescoping member 150 is displaced distally, the distal end thereof may protrude beyond the distal end of the clamp cup 110 to expand the clamp cup 110 and stop tissue at the harvesting portion 152 within the clamp cup 110, displacing the tissue proximally toward the telescoping member 150 to the storage portion 153.

Further, in the initial state, whether the clamp cup 110 is opened or closed, the distal end of the telescopic member 150 is disposed in the clamp cup 110 and near the distal end thereof, the telescopic member 150 can directly enter the tissue after the clamp cup 110 is opened, and then the clamp cup 110 bites the tissue, so that the distal end of the telescopic member 150 can not interfere with the opening and closing of the clamp cup 110 in the initial state; when the telescopic member 150 is displaced toward the distal end, the distal end thereof may protrude from the distal end of the clamp cup 110 by a length of 4mm or less.

In detail, with respect to the pliers body mechanism 100, the pliers base 120 includes a pipe base 121, two connecting posts 122 are formed by extending the pipe base 121 toward the distal end, the pliers cup 110 includes a pair of cups 111 and connecting members 112, which are disposed in a pair, and the two cups 111 are respectively hinged (via pins) to the two connecting posts 122 through a connecting member 112, wherein the connected cups 111, connecting members 112 and connecting posts 122 are located on the same side; wherein, in the far and near direction, the length of the tube seat 121 is larger than the length of the connecting column 122.

Further, the cup mouth portion of the cup body 111 includes a distal end cutting edge 1111, side cutting edges 1112 extending proximally to both sides, and a proximal opening 1113, wherein the end cutting edges 1111, the side cutting edges 1112 are arranged in succession. Wherein the opening 1113 is designed to allow the collection chamber 130 and the storage chamber 140 to communicate with each other without a stop; the end cutting edge 1111 and the side cutting edge 1112 which are arranged continuously are sharp, and a gap is not formed after the end cutting edge and the side cutting edge are meshed, and the shape of the end cutting edge and the side cutting edge can be in a knife edge shape or a saw tooth shape.

With respect to the collection chamber 130, the storage chamber 140, the collection portion 152, and the storage portion 153, specifically, the inside of the forceps cup 110 of the embodiment includes the collection chamber 130 (specifically, a portion of the space of the inside of the forceps cup 110 at the distal end), and the storage chamber 140 is formed between the proximal end of the collection chamber 130 and the guide 160; wherein the collecting cavity 130 corresponds to the collecting part 152 of the telescopic member, and the storing cavity 140 corresponds to the storing part 153 of the telescopic member.

To limit the stroke of the reciprocating displacement of the telescopic member 150, a first stopper 154 located at the distal end side of the guide member 160 and a second stopper 155 located at the proximal end side of the guide member 160 are fixedly connected to the telescopic member 150.

Further, the telescopic member 150 is detachably connected with the telescopic driving member 211 through a release member, and the release member in this embodiment is a connection tube; specifically, the portion of the expansion member 150 located on the proximal end side of the guide member 160 is provided with a connecting tube, which in this embodiment is directly the same member as the second stopper 155 for restricting the distal displacement stroke of the expansion member 150 (the connecting tube is not separately labeled), i.e., one member performs two functions.

More specifically, the telescopic member 150 and the connecting tube may be in interference fit with each other by reversely abutting the first stopper 154 and the guide member 160 until the telescopic member 150 is released from the connecting tube, or the connecting tube and the telescopic driving member 211 may be in interference fit with each other by reversely abutting the first stopper 154 and the guide member 160 until the telescopic member 150 is released from the connecting tube and the telescopic driving member 211.

A multi-sampling method adopting the multi-sampling biopsy device comprises the following specific steps:

s1: in an initial state, the distal end of the telescopic member 150 is positioned in the forceps cup 110 and near the distal end thereof, and when the biopsy device is positioned at the tissue to be taken, the forceps cup 110 is driven to be opened, so that the collecting part 152 at the distal end of the telescopic member 150 enters the tissue;

s2: the forceps cup 110 is driven to close so as to remove the tissue;

s3: the telescopic piece is driven to move towards the distal end, so that the forceps cup 110 is propped open by the distal end of the telescopic piece 150, and the tissue removed by S2 is always stopped in the forceps cup 110, so that the tissue moves towards the proximal end of the telescopic piece 150 to the storage part 153, and the acquisition part 152 is emptied;

s4: driving the telescoping member 150 proximally to return to its original state, while tissue follows the proximal displacement of the telescoping member away from the collection chamber 130 and into the storage chamber 140; at this time, one tissue sampling is completed;

s5: and repeating the steps S1 to S4 to finish N times of tissue sampling.

S6: the proximal displacement of the extension 150 is driven to cause the first stop 154 to counter the guide 160 until the extension 150 is released, and the user sequentially removes and collects the N pieces of sample tissue from the extension 150 after the release.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims (24)

1. A multisampling biopsy device, characterized in that: comprising the following steps:

the clamp body mechanism comprises a clamp cup and a clamp seat which are movably connected, wherein an acquisition cavity and a storage cavity which are adjacent and communicated are formed in the clamp body mechanism, and the acquisition cavity is positioned at the far end of the storage cavity;

the telescopic piece is arranged in the clamp body mechanism and is provided with a collecting part and a storing part, the collecting part is positioned at the far end of the storing part, and the telescopic piece is driven to reciprocate in the collecting cavity and the storing cavity so as to enable the collecting part to collect tissues and the storing part to store tissues;

the guide piece is arranged on the periphery of the telescopic piece and used for guiding the telescopic piece to reciprocate relative to the clamp body mechanism in the far and near end direction;

when the telescopic piece is displaced towards the distal end, the distal end of the telescopic piece can protrude out of the distal end of the clamp cup to prop the clamp cup open, and tissues at the collecting part are stopped in the clamp cup, so that the tissues are displaced towards the proximal end of the telescopic piece to the storing part.

2. The multi-sampling biopsy device of claim 1, wherein: the interior of the clamp cup at least comprises the collection cavity, and the storage cavity is formed between the proximal end of the collection cavity and the proximal end or the position close to the proximal end of the clamp seat.

3. The multi-sampling biopsy device of claim 1, wherein: the collecting cavity corresponds to the collecting part with the telescopic part, and the storing cavity corresponds to the storing part with the telescopic part.

4. The multi-sampling biopsy device of claim 1, wherein: the guide is disposed within the jaw body mechanism.

5. The multi-sampling biopsy device of claim 1, wherein: the guide is disposed at or near a proximal end within the jaw housing.

6. The multi-sampling biopsy device of claim 1 or 2 or 3 or 4 or 5, wherein: the interior of the forceps cup includes at least the collection chamber, and the storage chamber is formed between the proximal end of the collection chamber and the distal end of the guide.

7. The multi-sampling biopsy device of claim 1, wherein: the telescopic piece is arranged in the guide piece in a sliding penetrating mode.

8. The multi-sampling biopsy device of claim 7, wherein: the telescopic piece is provided with a first limiting piece positioned at the distal end side of the guide piece, or/and a second limiting piece positioned at the proximal end side of the guide piece.

9. The multi-sampling biopsy device of claim 1, wherein: the guide piece is arranged on the outer periphery of the telescopic piece, and the outer periphery of the guide piece can be in sliding connection with the inside of the clamp body mechanism.

10. The multi-sampling biopsy device of claim 9, wherein: the clamp body mechanism is internally connected with a first limiting piece positioned at the distal end side of the guide piece or/and a second limiting piece positioned at the proximal end side of the guide piece.

11. The multi-sampling biopsy device of claim 1, wherein: in the initial state, the distal end of the telescopic piece is arranged in the clamp cup and near the distal end of the telescopic piece, and after the clamp cup is opened, the tissue can be accessed.

12. The multi-sampling biopsy device of claim 1 or 11, wherein: the telescopic piece is a needle-shaped body, and the far end of the telescopic piece is in a needle-point shape.

13. The multi-sampling biopsy device of claim 1 or 11, wherein: the periphery of the telescopic piece is provided with anti-slip protrusions and/or anti-slip depressions.

14. The multi-sampling biopsy device of claim 1, wherein: the pliers seat comprises a pipe seat, two connecting columns are formed by extending the pipe seat towards the far end, the pliers cup comprises a pair of connected cup bodies and connecting pieces, the two cup bodies are respectively and movably connected to the two connecting columns through the connecting pieces, and the connected cup bodies, the connecting pieces and the connecting columns are positioned on the same side.

15. The multi-sampling biopsy device of claim 14, wherein: the length of the tube seat is longer than the length of the connecting column in the far and near end direction.

16. The multi-sampling biopsy device of claim 1 or 2 or 14, wherein: the clamp cup comprises a cup body, and the proximal end of the cup body is open, so that a collection cavity and a storage cavity are communicated without a stop.

17. The multi-sampling biopsy device of claim 16, wherein: the rim of a cup portion of cup includes tip blade, the tip blade that is located the distal end extends to the lateral part blade that is located both sides towards the proximal end and is located the open of proximal end, and wherein tip blade, lateral part blade are arranged in succession.

18. The multi-sampling biopsy device of claim 1, wherein: the telescopic driving piece is connected with the proximal end of the telescopic piece, and the opening and closing driving piece which is connected with the proximal end of the clamp cup and can enable the telescopic piece to open and close is arranged in the sheath.

19. The multi-sampling biopsy device of claim 18, wherein: the telescopic piece and the telescopic driving piece are detachably connected.

20. The multi-sampling biopsy device of claim 19, wherein: the telescopic parts and the telescopic driving parts are detachably connected through release parts.

21. The multi-sampling biopsy device of claim 20, wherein: at least on the part of the telescopic element located on the proximal side of the guide element, the release element can be used as a second limiting element for limiting the displacement travel of the telescopic element towards the distal end.

22. The multi-sampling biopsy device of claim 18 or 19 or 20, wherein: a first stopper is provided at least on a portion of the expansion element located on the distal end side of the guide member.

23. The multi-sampling biopsy device of claim 22, wherein: the telescopic parts and the telescopic driving parts are detachably connected through connecting pipes; the telescopic part and the connecting pipe are in interference fit and can reversely prop against each other through the first limiting part and the guide part until the connecting pipe releases the telescopic part, or/and the connecting pipe and the telescopic driving part are in interference fit and can reversely prop against each other through the first limiting part and the guide part until the telescopic part is released through the release of the connecting pipe and the telescopic driving part.

24. The multi-sampling biopsy device of claim 18, wherein: the guide is disposed on the jaw body mechanism with its proximal end in contact with the distal end of the sheath.