CN113413176A - Continuous sampling surgical instrument - Google Patents

Abstract

A continuous sampling surgical instrument includes a jaw having a switching between an open state and a closed state, an outer tube, and an inner tube. The forceps head is matched with the outer tube in a sliding way. The inner pipe is arranged in the outer pipe in a penetrating way and is matched with the outer pipe in a sliding way in the extending direction of the outer pipe; one end of the inner tube is connected with the forceps head, the other end of the inner tube is used for being connected with a negative pressure device or an injection device, and the negative pressure device is used for enabling the tube cavity of the inner tube to generate negative pressure so as to absorb tissues sampled by the forceps head from the forceps head to the tube cavity of the inner tube; the inner pipe is used for driving the tong head to move relative to the outer pipe so as to switch the tong head between an opening state and a closing state. Can realize continuous sampling under the state that the sample apparatus remains in the endoscope pincers way all the time, the operation degree of difficulty is low, and the operation time is short, and is efficient, and the risk is low, and the operation is inconvenient.

Description

Continuous sampling surgical instrument

Technical Field

The invention relates to the field of medical equipment, in particular to a continuous sampling surgical instrument.

Background

The disposable biopsy forceps are common instruments for endoscopy and treatment, the head is controlled to work by operating and transmitting a handle, and biopsy sampling is completed through an endoscope channel (such as an alimentary tract endoscope or a respiratory tract endoscope).

The inventor researches and discovers that the existing biopsy forceps have the following defects:

the existing product needs to withdraw from the biopsy forceps after each biopsy, takes out a sample, has long operation time, increases operation risk and is very inconvenient to operate.

Disclosure of Invention

The invention aims to provide a continuous sampling surgical instrument which can realize continuous sampling, shorten the operation time, reduce the operation risk and is flexible and convenient to operate.

The embodiment of the invention is realized by the following steps:

the present invention provides a continuous sampling surgical instrument comprising:

a tong head which is switched between an open state and a closed state;

the clamp head is matched with the outer pipe in a sliding way;

the inner pipe is arranged in the outer pipe in a penetrating mode and is matched with the outer pipe in a sliding mode in the extending direction of the outer pipe; one end of the inner tube is connected with the forceps head, the other end of the inner tube is used for being connected with a negative pressure device or an injection device, and the negative pressure device is used for enabling the tube cavity of the inner tube to generate negative pressure so as to absorb tissues sampled by the forceps head from the forceps head to the tube cavity of the inner tube; the inner pipe is used for driving the tong head to move relative to the outer pipe so as to switch the tong head between an opening state and a closing state.

In an optional embodiment, the binding clip comprises a mounting pipe and two clamping arms, wherein both the two clamping arms are connected with the mounting pipe and can be switched between an open state and a closed state; the installation pipe is slidably matched with the outer pipe and is connected with the inner pipe.

In an alternative embodiment, the inner tube is plugged into the mounting tube.

In an alternative embodiment, the clamping arms are provided as resilient arms; the two clamping arms can be abutted against the inner wall of the outer pipe and retract into the outer pipe when the inner pipe slides along the first direction, so that the two clamping arms are switched from an open state to a closed state; the two clamping arms can also stretch out of the outer tube and recover deformation when the inner tube slides along a second direction opposite to the first direction, so that the two clamping arms are switched to an open state from a closed state.

In an alternative embodiment, the tubular cavity of the mounting tube has a reducing section, the cross-sectional area of the reducing section gradually decreases in a direction from one end of the mounting tube close to the clamping arm to one end far away from the clamping arm, the inner tube is communicated with one end of the reducing section far away from the clamping arm, and the cross section is a plane perpendicular to the axis of the mounting tube.

In an alternative embodiment, the cross-sectional shape of the reducer section is circular or square.

In an alternative embodiment, the binding clip is detachably connected to the inner tube.

In an alternative embodiment, both the outer tube and the inner tube are bendable tubes.

In an alternative embodiment, the continuous sampling surgical instrument further comprises a fixed head fixedly connected with the outer tube, and the forceps head is inserted into the fixed head and slidably engaged with the fixed head.

In an alternative embodiment, the fixing head is provided with an anti-drop convex part which is used for being abutted against the binding clip so as to prevent the binding clip from being separated from the fixing head in the process of switching from the closed state to the open state.

The embodiment of the invention has the beneficial effects that:

in summary, the continuous sampling surgical instrument provided in this embodiment is used in conjunction with an endoscope to place the surgical instrument into a patient, adjust the forceps head to an open state, and position the tissue to be sampled in an area where the forceps head can sample. And then, a handle structure connected with the inner tube is used for driving the inner tube to slide relative to the outer tube along the extension direction of the outer tube, and the inner tube drives the forceps head to move relative to the outer tube, so that the forceps head is switched from an open state to a closed state, and the sampling of tissues is realized. The tissue after sampling is clamped by the forceps head, at the moment, the negative pressure device communicated with the inner tube is utilized to enable the tube cavity of the inner tube to generate negative pressure, the tissue clamped by the forceps head enters the inner tube and is output through the inner tube, the tissue in the inner tube is collected, one-time sampling is completed, and then the operation of sampling the tissue is repeated. So, need not take out surgical instruments, can carry out a lot of tissue sampling, reduce the operation degree of difficulty, reduce the operation risk, shorten operation time, the flexible operation is convenient.

It should be understood that the proximal end of the inner tube may also be connected to an injection device for performing injection flushing and the like.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a continuous sampling surgical instrument according to an embodiment of the present invention;

FIG. 2 is an exploded view of a continuous sampling surgical instrument according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a fixing head according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a binding clip according to an embodiment of the present invention;

fig. 5 is a partial structural schematic view of the binding clip according to the embodiment of the present invention.

Icon:

100-binding clip; 110-mounting the tube; 111-a reducer section; 112-equal diameter section; 120-a clamp arm; 130-notch; 131-a bottom wall; 200-an outer tube; 300-inner tube; 400-a fixed head; 410-anti-slip convex part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

At present, when an instrument is used for sampling, the instrument is matched with an endoscope for use, and after the instrument is placed in a patient body to finish sampling once, the instrument needs to be taken out along a clamp passage of the endoscope, and then sample tissues need to be unloaded. When need take a sample many times, need repeatedly carry out putting into and taking out the action of apparatus, so, operation time is long, and the degree of difficulty is big, and the risk is high, and it is very inconvenient to operate.

Referring to fig. 1-5, in view of the above, the designer designs a continuous sampling surgical instrument, which can realize continuous sampling in a state where the sampling instrument is always kept in the endoscopic forceps channel, and has the advantages of low operation difficulty, short operation time, high efficiency, low risk and inconvenient operation.

Referring to fig. 1 and 2, in the present embodiment, the continuous sampling surgical instrument includes a forceps head 100 capable of being switched between an open state and a closed state, an outer tube 200, and an inner tube 300. The forceps head 100 is slidably engaged with the outer tube 200. The inner tube 300 is inserted into the outer tube 200 and slidably engaged with the outer tube 200 in the extending direction of the outer tube 200; one end of the inner tube 300 is connected with the forceps head 100, the other end of the inner tube 300 is used for being connected with a negative pressure device or an injection device, and the negative pressure device is used for enabling the lumen of the inner tube 300 to generate negative pressure so as to adsorb tissues sampled by the forceps head 100 from the forceps head 100 to the lumen of the inner tube 300; the injection device is used for injecting liquid into the inner tube 300 to realize functions of injection flushing and the like. The inner tube 300 is used to move the forceps head 100 relative to the outer tube 200 to switch the forceps head 100 between an open state and a closed state.

The continuous sampling surgical instrument provided by the embodiment is used with an endoscope, and during operation, the surgical instrument is placed into a patient body by using an endoscopic forceps channel, the forceps head 100 is adjusted to an open state, and tissues to be sampled are located in an area where the forceps head 100 can sample. Then, a force is applied to the inner tube 300 to drive the inner tube 300 to slide relative to the outer tube 200 along the extending direction of the outer tube 200, and the inner tube 300 drives the forceps head 100 to move relative to the outer tube 200, so that the forceps head 100 is switched from the open state to the closed state, and sampling of the tissue is achieved. The sampled tissue is clamped by the forceps head 100, at this time, the negative pressure is generated in the lumen of the inner tube 300 by the negative pressure device communicated with the inner tube 300, the tissue clamped by the forceps head 100 enters the inner tube 300 and is output through the inner tube 300, the tissue in the inner tube 300 is collected, one-time sampling is completed, and then the operation of sampling the tissue is repeated. So, need not take out surgical instruments, can carry out a lot of tissue sampling, reduce the operation degree of difficulty, reduce the operation risk, shorten operation time, the flexible operation is convenient.

In this embodiment, the outer tube 200 may be a spring tube, and the size of the outer tube 200 is set as required, which is not particularly limited in this embodiment. The outer tube 200 may be a circular tube, and has a smooth outer circumferential surface without water caltrops, and is not easy to scratch tissues.

Referring to fig. 1 and 3, optionally, a fixing head 400 is disposed at a distal end of the outer tube 200, the fixing head 400 is a circular tube, and hardness of the fixing head 400 is greater than hardness of the outer tube 200, and the fixing head 400 has high strength and hardness and is less prone to deformation compared with the outer tube 200.

The fixing head 400 may be inserted into the outer tube 200 and fixed to the outer tube 200 by bonding. Alternatively, the fixing head 400 is screwed to the outer tube 200, which is not illustrated in this embodiment.

Further, the inner wall of the fixing head 400 is provided with two anti-falling protrusions 410, and the two anti-falling protrusions 410 are distributed in a central symmetry manner. Each of the anti-slip protrusions 410 protrudes inward from the inner wall of the fixing head 400 in the radial direction of the fixing head 400.

Alternatively, the inner tube 300 is provided as a spring tube, and the inner tube 300 is provided as a circular tube, and the inner tube 300 is inserted into the outer tube 200 to be slidably fitted with the outer tube 200 in the extending direction of the outer tube 200.

Referring to fig. 4, in the present embodiment, optionally, the forceps head 100 includes a mounting tube 110 and two clamping arms 120, the two clamping arms 120 are both mounted at a distal end of the mounting tube 110, and the two clamping arms 120 are arranged in a central symmetry manner.

Alternatively, the mounting tube 110 is configured as a circular tube, and the proximal end of the mounting tube 110 is connected to the inner tube 300. It should be understood that the proximal end of the mounting tube 110 may be removably connected to the inner tube 300. When assembled, the distal end of the inner tube 300 is inserted into the mounting tube 110.

Referring to fig. 5, further, the lumen of the mounting tube 110 includes a reducing section 111 and an equal-diameter section 112, which are coaxially disposed, and the cross-sectional area of the reducing section 111 gradually decreases from one end of the mounting tube 110 close to the clamping arm 120 to one end far from the clamping arm 120. That is, the cross-sectional area of the tapered section 111 gradually decreases in a direction from the distal end to the proximal end of the installation tube 110. In other words, since the cross-section of the variable diameter section 111 is circular, the cross-sectional diameter of the variable diameter section 111 gradually decreases in a direction from the distal end to the proximal end of the installation tube 110. The end with the smaller diameter of the variable diameter section 111 is fixedly connected with the equal diameter section 112. Two clamping arms 120 are fixed on an end face of the reducing section 111 far away from the equal-diameter section 112. Two notches 130 are formed in the two clamping arms 120 and the mounting tube 110 in the circumferential direction of the mounting tube 110, the bottom wall 131 of each notch 130 is a partial end surface of the mounting tube 110, and the bottom walls 131 of the two notches 130 are respectively abutted against the two anti-falling projections 410, so that the forceps head 100 is prevented from falling out of the fixing head 400.

Optionally, the two clamping arms 120 are elastic arms, each clamping arm 120 is made of memory alloy, the two clamping arms 120 are in an open state when in an initial state, the clamping arms 120 can deform when being subjected to an external force, and the clamping arms can be restored to the initial open state after the external force is cancelled. That is, the forceps head 100 is installed in the fixing head 400, and in an initial state, the two clamping arms 120 extend out of the distal end of the fixing head 400 and are in an open state, and when a force is applied to the inner tube 300 to drive the forceps head 100 to retract into the fixing head 400, the two clamping arms 120 abut against the fixing head 400, and under the restriction action of the fixing head 400, the two clamping arms 120 are folded to be in a closed state, so that a tissue can be clamped. Because fixed head 400's intensity is high, when arm lock 120 withdrawed to fixed head 400 in, fixed head 400 can provide sufficient holding power, guarantees that arm lock 120 closes smoothly, and is difficult for producing deformation, and two arm lock 120 closed degree is high, and it is more convenient to clamp and get the tissue.

The continuous sampling surgical instrument provided by the embodiment is matched with an endoscope to place the surgical instrument into a patient body, the inner tube 300 is driven, the inner tube 300 drives the two clamping arms 120 in an open state to retract into the fixing head 400, and the two clamping arms 120 are switched to a closed state from the open state and clamp tissues. The removed tissue is clamped between the two clamping arms 120 and retracted together into the fixation head 400. When tissue sampling needs to be repeated, a negative pressure device or an injection device is connected to the proximal end of the inner tube 300, after the negative pressure device or the injection device is started, negative pressure is generated in the lumen of the inner tube 300, the sample tissue between the two clamping arms 120 is adsorbed into the lumen of the inner tube 300 by using the negative pressure, and finally the sample tissue is discharged from the inner tube 300 for collection. There is not sample tissue in binding clip 100, directly utilizes inner tube 300 to promote binding clip 100 and stretch out the distal end of fixed head 400, and two arm lock 120 reset and are the open mode, can carry out the sample operation once more, and the simple operation is nimble.

Meanwhile, in the tissue sample collection process, the tissue sample firstly enters the reducer section 111, the reducer section 111 is approximately a conical cavity, and the closer the sample tissue is to the smaller end of the reducer section 111, the closer the sample tissue is to the inner wall of the reducer section 111, the air leakage is avoided, the vacuum adsorption is facilitated, and the operation efficiency is high.

The continuous sampling surgical instrument provided by the embodiment does not need to be taken out, repeated tissue sampling can be performed for multiple times, the operation difficulty is reduced, the operation risk is reduced, the operation time is shortened, and the operation is flexible and convenient.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A continuous sampling surgical instrument, comprising:

a binding clip (100) which is switched between an open state and a closed state;

an outer tube (200), the tong head (100) being slidably engaged with the outer tube (200);

and an inner tube (300), the inner tube (300) is arranged in the outer tube (200) in a penetrating way and is matched with the outer tube (200) in a sliding way in the extending direction of the outer tube (200); one end of the inner tube (300) is connected with the forceps head (100), the other end of the inner tube (300) is used for being connected with a negative pressure device or an injection device, and the negative pressure device is used for generating negative pressure in the lumen of the inner tube (300) so as to adsorb the tissue sampled by the forceps head (100) from the forceps head (100) to the lumen of the inner tube (300); the inner tube (300) is used for driving the forceps head (100) to move relative to the outer tube (200) so as to enable the forceps head (100) to be switched between the opening state and the closing state.

2. The continuous sampling surgical instrument of claim 1, wherein:

the forceps head (100) comprises a mounting tube (110) and two clamping arms (120), the two clamping arms (120) are connected with the mounting tube (110), and the two clamping arms (120) can be switched between the open state and the closed state; the mounting tube (110) is slidably engaged with the outer tube (200), and the mounting tube (110) is connected with the inner tube (300).

3. The continuous sampling surgical instrument of claim 2, wherein:

the inner pipe (300) is inserted into the installation pipe (110).

4. The continuous sampling surgical instrument of claim 2, wherein:

the clamping arm (120) is arranged as an elastic arm; the two clamping arms (120) can abut against the inner wall of the outer pipe (200) and retract into the outer pipe (200) when the inner pipe (300) slides along a first direction, so that the two clamping arms (120) are switched from the open state to the closed state; the two clamping arms (120) can also extend out of the outer pipe (200) and restore deformation when the inner pipe (300) slides along a second direction opposite to the first direction, so that the two clamping arms (120) are switched from the closed state to the open state.

5. The continuous sampling surgical instrument of claim 2, wherein:

the lumen of the installation tube (110) is provided with a reducing section (111), the cross-sectional area of the reducing section (111) is gradually reduced in the direction from one end of the installation tube (110) close to the clamping arm (120) to one end far away from the clamping arm (120), the inner tube (300) is communicated with one end of the reducing section (111) far away from the clamping arm (120), and the cross section is a plane perpendicular to the axis of the installation tube (110).

6. The continuous sampling surgical instrument of claim 5, wherein:

the cross section of the variable diameter section (111) is circular or square.

7. The continuous sampling surgical instrument of claim 1, wherein:

the forceps head (100) is detachably connected with the inner tube (300).

8. The continuous sampling surgical instrument of claim 1, wherein:

the outer tube (200) and the inner tube (300) are both bendable tubes.

9. The continuous sampling surgical instrument of claim 8, wherein:

the continuous sampling surgical instrument further comprises a fixing head (400), the fixing head (400) is fixedly connected with the outer tube (200), and the forceps head (100) is inserted into the fixing head (400) and is slidably matched with the fixing head (400).

10. The continuous sampling surgical instrument of claim 9, wherein:

the fixed head (400) is provided with an anti-falling convex part (410), and the anti-falling convex part (410) is used for abutting against the forceps head (100) so as to prevent the forceps head (100) from being separated from the fixed head (400) in the process of switching from the closed state to the open state.

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