CN211460406U

CN211460406U - Semi-open blade tip and resectoscope for internal tissue resection

Info

Publication number: CN211460406U
Application number: CN201921852979.XU
Authority: CN
Inventors: 张丁丁; 张静
Original assignee: Sichuan Provincial Peoples Hospital
Current assignee: Sichuan Provincial Peoples Hospital
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-09-11
Anticipated expiration: 2029-10-31

Abstract

The utility model relates to a medical instrument, in particular to half open-close type cutting edge end and excising device for internal tissue excision, the cutting edge end has open state and closure state, and when the cutting edge end was the closure state, it holds the chamber to form in the cutting edge end, the inner space that holds the pipe of chamber and internal tissue excising device is linked together, the cutting edge end is still including a plurality of cutting edges the cutting edge end is by opening when the state switches to the closure state, the cutting edge is drawn the internal tissue of treating the excision of patient, realizes treating the cutting of excision tissue. The cutting edge end directly avoids the risk that cut tissues are left in a patient body when the tissues are cut; moreover, the incision healing is facilitated, the subsequent operation is facilitated, and the operation quality is improved; on the other hand, the assistant cleaning step is saved, and the risk of infection in the body of the patient is reduced; in addition, the excision process is fast, the efficiency is high, and the operation time is favorably shortened.

Description

Semi-open blade tip and resectoscope for internal tissue resection

Technical Field

The utility model relates to a medical instrument, in particular to a semi-open type cutting edge end head and an excising device for excising internal tissues.

Background

In the technical field of medical operation, in-vivo tissue resection is a common operation mode, and further diffusion of pathological tissues is prevented by resection of the pathological tissues, so that the treatment purpose is achieved. Minimally invasive surgery is increasingly widely applied due to the reasons of small surgical incision, little pain in the surgical process of patients, quick recovery of patients and the like.

In the minimally invasive surgery, when the tissue is excised, the current surgical method is to use a minimally invasive scalpel, a surgical scissors, a minimally invasive electrotome, etc. to excise the tissue, and then to separate the tissue from the body, which is widely used, but in further research work, the inventors found that the method has disadvantages, such as the following:

when the existing cutting surgical equipment is adopted, when tissue is cut, the tissue is separated not only by one cutting or shearing action but also by multiple times of shearing or cutting, the tissue to be cut can be cut off, during the multiple times of shearing or cutting, tissue fragments are very likely to form, although the tissue is assisted by a laparoscope, the tissues in vivo are complex, and blood and tissue fluid are usually still present in the surgical process, so that even if the tissue is assisted by hands to be cleaned, a blind area still exists in the visual field of an operator, the tissue fragment fragments are very likely to enter tissues or mucous membranes between the tissues, the difficulty of subsequent cleaning work is very high, the surgical difficulty is greatly increased, the surgical time is greatly prolonged, and the surgical quality is not facilitated; moreover, even more seriously, if the tissue fragments are left in the body, infection and other serious medical accidents can be caused. Therefore, there is a need to design an in vivo tissue cutting device for use in an in vivo tissue cutting operation, which can facilitate collection and cleaning of tissue fragment fragments and reduce the risk of leaving tissue fragment fragments.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: to there being the difficult collection of tissue fragment piece in the inside tissue excision operation of prior art to leave over the very big not enough of risk, provide one kind and can make things convenient for tissue fragment piece to collect the clearance, reduce the internal tissue resection device that tissue fragment piece left over the risk.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a half open-close type cutting edge end for internal tissue excision, the cutting edge end has open state and closed state when the cutting edge end is closed state, form in the cutting edge end and hold the chamber, hold the inner space of chamber and internal tissue exciser's pipe and be linked together, the cutting edge end still includes a plurality of cutting edges when the cutting edge end is switched to closed state by open state, the cutting edge is drawn the internal tissue of treating the excision of patient, realizes treating the cutting of excision tissue.

The utility model provides a cutting edge end, when carrying out the tissue excision operation, with cutting edge end propelling movement to waiting to excise tissue department, make the cutting edge end present the open state to make each cutting edge be in on required excision separation path, then make the cutting edge end switch to the closed state by the open state, at this in-process, realize treating the excision of excising the tissue. By adopting the mode, when the tissue is cut, the cut and separated tissue naturally falls into the containing cavity in the end head of the cutting edge, so that the risk that the cut tissue is left in the body of a patient is directly avoided; the operation risk is greatly reduced; moreover, for the incision of the same blade, the separation can be realized by one-time cutting action, so that the risk that components such as the conventional surgical scissors and the like repeatedly cut a certain cutting part to form fine tissue fragment fragments is avoided; furthermore, the incision is smooth, the healing of the incision is facilitated, the subsequent surgical operations such as clamping of a hemostatic clamp and tissue suturing are facilitated, and the surgical quality is improved; on the other hand, when the blade tissue is cut off and falls into the containing cavity, the blade end is in a closed state, if the cut tissue is larger, the conventional surgical scissors and the like can be adopted to stretch into the containing cavity to fragment the cut tissue, the fragmentation process is carried out in the blade end containing cavity in the closed state, firstly, the damage of the fragmentation process to the surrounding normal tissue is avoided, the surgical quality is further improved, tissue fluid or blood is also reduced or avoided to flow into the body of a patient, the cleaning step of an assistant is saved, and the risk of infection in the body of the patient is also reduced;

furthermore, when the cut tissue is cyst, polyp and other tissues with independent shapes, the end of the blade completely covers the cut tissue, so that the whole body can be cut and taken out quickly; when the cut tissue has larger volume, the operation can be performed by adopting a step-by-step cutting mode, the cutting process is fast in speed and high in efficiency, and the operation time is favorably shortened.

As a preferred technical scheme, the cutting edge end comprises a plurality of blades, the blades are of a sheet structure bulging outwards, and the cutting edges are arranged on the blades. Through the outside bulging of blade, and then hold the chamber in the inboard formation of blade the aforesaid, moreover, adopt sheet structure for cutting edge end weight is lighter, further makes things convenient for the control to the cutting edge end.

Preferably, the blades are uniformly distributed in the circumferential direction. The knife edge opening device ensures good consistency in the opening process of each blade, and is beneficial to the grasping and predicting of the position of the blade of an operator.

According to a preferable technical scheme, when the blade edge end is in an open state, the blades are separated, and when the blade edge end is in a closed state, the blades are connected to form the accommodating cavity.

As a preferable technical solution, when the blade edge tip is in a closed state, the blade surrounds a spherical structure or a spherical crown structure, and the accommodating cavity is located inside the spherical structure or the spherical crown structure.

As another preferred technical scheme, when the end of the blade is in a closed state, the blade is in an ellipsoidal structure or an ellipsoidal crown structure in a surrounding manner, and the accommodating cavity is located inside the ellipsoidal structure or the ellipsoidal crown structure.

In the scheme, the spherical structure or the spherical crown structure or the ellipsoidal crown structure is formed, the external structure of the structure is smooth, the peripheral tissues are prevented from being scratched when the blade tip enters, meanwhile, the blade tip can be favorably used for strutting the tissues entering the path, the operation is further facilitated, and the operation steps are simplified.

As another preferable technical scheme, when the end of the cutting edge is in a closed state, the blade surrounds to form a conical structure or a frustum-shaped structure, and the accommodating cavity is located inside the conical structure or the frustum-shaped structure. The blades are surrounded to form a conical structure or a frustum structure, and the edge structure exists, so that a surgeon can conveniently and reliably master the shape of the cutting edge end, the tissue damage caused by the tissue dragging due to the twisting of the cutting edge end in the operation process is avoided, and the edge of the cutting edge end can also be used as position reference.

Preferably, the tapered structure of the blade tip is a conical shape or a pyramid shape, and the truncated cone shape of the blade tip is connected with the truncated cone shape or the truncated pyramid shape.

Preferably, the outer wall of one end, facing the tissue to be cut, of the blade tip is arc-surface-shaped. The arc surface shape is that the outer wall of the end part is rounded, so that the outer end surface of the cutting edge end head is of a smooth transition structure, the cutting edge end head can enter the tissue to be cut off conveniently, and other tissues in the body of a patient can be prevented from being scratched in the entering process. Through the mode of this scheme, further reduce the risk of cutting edge end fish tail patient internal other tissues, also further make things convenient for the cutting edge end to strut patient internal tissue and reach the affected part.

Preferably, the blade edge tip is divided into the blades along a generatrix direction.

As a preferable technical solution, the blade is provided with a blade edge along the direction of the blade edge generatrix on both side edges of the blade edge generatrix.

By the mode, the blade is switched towards the closed state, the cutting action is carried out, the end of the cutting edge is closed to be in the linear state that the cutting edge is gradually close to, the stable linearity of the tissue cutting process is ensured, and the control of an operating doctor on the state of the operating process is facilitated.

As another preferable technical scheme, one side of the blade along the generatrix of the blade edge end is a blade edge, the other side plate is a flange, the blade edge is provided with a blade edge along the generatrix direction of the blade edge end, the flange is a flat side, and the blade edge of the blade is opposite to the flange of the adjacent blade. In this kind of mode, the side cooperation through cutting edge and continuous blade realizes the cutting to the tissue, avoids the condition that the dislocation appears when cutting edge and cutting edge are relative, ensures the good airtight effect of cutting edge end.

As a further preferable scheme, grooves for being matched with the corresponding cutting edges are formed in the blocking edges, and when the ends of the cutting edges are in a closed state, the cutting edges are located in the corresponding grooves. The arrangement of the groove further facilitates the cutting action of the blade and further ensures the sealing effect of the blade end.

As a further preferable mode, the groove is a V-shaped groove. When the cutting edge slides along the side wall of the V-shaped groove, the cutting and separating effects can be more reliably realized, the smoothness of the cut is further ensured, and the operation quality is improved.

As a preferable technical scheme, an annular cutter holder is further arranged at the lower end of the cutting edge, the cutter holder is made of flexible silica gel materials, and the lower end of each blade is embedded in the cutter holder. The arrangement of the tool apron is that the end of the cutting edge formed by each cutting edge has good integrity, and meanwhile, the tool apron is favorable for forming reliable sealing fit with other structures.

The application also discloses a cutter adopting the cutting edge end head,

an exciser for internal tissue excision comprising the semi-open blade tip described above.

As a preferable technical scheme, the resectoscope further comprises a catheter, one end of the catheter is an extending end used for extending into a patient, the other end of the catheter is an operating end located outside the patient, a blade tip is arranged on the extending end, the resectoscope further comprises an operating part used for driving the blade tip to switch between an opening state and a closing state, one end of the operating part is arranged at the operating end of the catheter, and the other end of the operating part is matched with the blade tip.

The resectoscope can be independently used during tissue resection operation, can also be used in cooperation with the conventional laparoscopic imaging system at present, is used for operation under the assistance of the laparoscopic imaging system, during the operation, a catheter enters a patient body from a distraction channel at an incision of the abdominal wall of the patient, a blade end is pushed to a tissue to be resected by the catheter, the catheter is a hollow catheter with two open ends, the catheter is made of medical silica gel materials or hospital rubber materials, the material and the mechanical property of the catheter can be the same as those of the conventional laparoscopic catheter at present, the catheter can be used for entering the patient body, and the catheter has certain strength and deformability, for example, the catheter material of the conventional endoscope at present is adopted, an operator controls the blade end through an operation end of an operation part to enable the blade end to be in a distraction state, and then adjusts the position and the angle of the blade end through the catheter, the cutting edges are positioned on a required cutting separation path, then the cutting edge ends are controlled through the operation end of the operation part, the cutting edge ends are switched to a closed state from an open state, and in the process, the cutting of the tissue to be cut is realized. Because the blade end is adopted, the risk that cut tissues are left in a patient body is directly avoided when the tissues are cut; the operation risk is greatly reduced; moreover, the wound healing is facilitated, and the subsequent surgical operations such as clamping of the hemostatic clamp, tissue suture and the like are facilitated, so that the surgical quality is improved; on the other hand, the assistant cleaning step is saved, and the risk of infection in the body of the patient is reduced; in addition, the excision process is fast, the efficiency is high, and the operation time is favorably shortened.

Preferably, the cutter further comprises a sleeve, and the inner wall of the sleeve is in clearance fit with the guide tube and the blade tip in the closed state. The sleeve is made of medical silica gel materials, the catheter and the blade end are arranged in the sleeve during surgery, the catheter and the blade end enter an affected part together with the sleeve from an abdominal wall incision of a patient, the blade end is pushed to a tissue to be excised through the catheter, the excision action of the blade end is controlled through the push rod, when excision is completed or multiple excision is needed, cut tissues in the blade end are cleaned out of a body by adopting other surgical equipment or the sleeve is kept still, the catheter is pulled out of the body from the sleeve, and the next layer of tissue is cut by extending the sleeve into the affected part after the tissue in a blade end accommodating cavity is cleaned; after the whole tissue to be cut is cut off, the catheter and the end head of the cutting edge are taken out, other surgical instruments are adopted to carry out the operation of the subsequent surgical steps, and finally the sleeve is taken out.

Preferably, a first film sleeve is further hermetically connected between the tool holder and the outer wall of the pushing member, and a second film sleeve is further hermetically connected between the pushing member and the sleeve.

The first film sleeve and the second film sleeve are made of medical resin films, and both ends of the first film sleeve and the second film sleeve are of open hollow sleeve-shaped structures, so that the first film sleeve and the second film sleeve have good sealing effect and deformation capacity. Through the first film sleeve and the second film sleeve, a well-sealed channel is formed between the blade tip and the catheter, so that tissue fluid and blood of the excised tissue are further prevented from flowing out, and tissue fragments are prevented from randomly falling into the body of a patient.

According to the preferable technical scheme, a hanging lug is fixedly connected to the blade, a connecting rod is connected to the middle portion or the middle lower portion of the hanging lug through a pin shaft, the other end of the connecting rod is connected with the guide pipe through a pin shaft, the operating component comprises a push rod and a pushing component connected with the push rod, the pushing component is connected with the lower end of the hanging lug through a pin shaft, the push rod pushes the pushing component to exceed the position, when the end of the cutting edge moves, the end of the cutting edge gradually opens, and when the push rod pulls the pushing component to move towards the direction deviating from the end of the cutting edge, the end of the cutting edge gradually closes.

As a preferable technical scheme, the hanging lugs are in an arc shape bulging outwards.

Preferably, the pushing member is provided with a plurality of notches. The notch is formed in the pushing component, and other surgical instruments such as minimally invasive surgical scissors and a minimally invasive camera system can enter the accommodating cavity through the catheter to perform surgical auxiliary work, so that the surgical convenience and safety are further improved.

As another preferable technical solution, the pushing member has a ring structure. The annular structure is adopted, so that the pushing component has a larger space, and the operation is further convenient.

Preferably, the push rod is a deformable slender rod structure. The strength of the push rod ensures that the push component can be smoothly pushed to move forwards, and the push rod also has certain elasticity, so that enough bending deformation can be provided to push the blade tip to the tissue part to be excised.

As a preferable technical scheme, a guide plate is further arranged in the operation end of the guide pipe, a plurality of through holes are formed in the guide plate, and the inner wall of at least one through hole is in sliding fit with the push rod. Through the setting of deflector, support the push rod of operation end department, reduce the interference between push rod and other equipment.

Preferably, the through hole on the guide plate corresponds to the notch on the pushing component in position and shape. So set up, further make things convenient for the entering of real surgical equipment.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

furthermore, when the cut tissue is cyst, polyp and other tissues with independent shapes, the end of the blade completely covers the cut tissue, so that the whole body can be cut and taken out quickly; when the cut tissue has larger volume, the operation can be performed by adopting a step-by-step cutting mode, the cutting process is fast in speed and high in efficiency, and the operation time is favorably shortened;

the resectoscope directly avoids the risk that the cut tissue is left in a patient body when the tissue is resected; the operation risk is greatly reduced; moreover, the wound healing is facilitated, and the subsequent surgical operations such as clamping of the hemostatic clamp, tissue suture and the like are facilitated, so that the surgical quality is improved; on the other hand, the assistant cleaning step is saved, and the risk of infection in the body of the patient is reduced; in addition, the excision process is fast, the efficiency is high, and the operation time is favorably shortened.

Drawings

FIG. 1 is a schematic diagram of the construction of one embodiment of an exciser;

FIG. 2 is a schematic view of the blade tip with the drip film cover, the second film cover and the sleeve removed;

FIG. 3 is a schematic view of the split structure of FIG. 2;

the labels in the figure are: 1-blade end, 2-blade, 3-blade, 4-conduit, 5-groove, 6-blade seat, 7-first film sleeve, 8-second film sleeve, 9-pushing component, 10-hanging lug, 11-notch, 12-guide plate, 13-through hole, 14-sleeve, 15-push rod and 16-connecting rod.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1, as shown in figures 1-3,

the utility model provides a half open-close type cutting edge end for internal tissue excision, the cutting edge end has open state and closed state when the cutting edge end is closed state form in cutting edge end 1 and hold the chamber, hold the chamber and be linked together with the inner space of the pipe 4 of internal tissue exciser, cutting edge end 1 is still including a plurality of cutting edges 3 cutting edge end 1 is by opening the state when switching to closed state, cutting edge 3 is drawn the internal tissue of treating the excision of patient, realizes treating the cutting of excision tissue.

In the blade tip 1 of the present embodiment, when a tissue resection operation is performed, the blade tip 1 is pushed to a tissue to be resected, the blade tip 1 is in an open state, each blade 3 is positioned on a desired resection separation path, and then the blade tip 1 is switched from the open state to a closed state, and in this process, the tissue to be resected is resected. By adopting the mode, when the tissue is cut, the cut and separated tissue naturally falls into the containing cavity in the blade end 1, so that the risk that the cut tissue is left in the body of a patient is directly avoided; the operation risk is greatly reduced; moreover, the separation can be realized at the incision of the same blade 3 by one cutting action, so that the risk that components such as the conventional surgical scissors and the like repeatedly cut a certain part to form fine tissue fragment fragments is avoided; furthermore, the incision is smooth, the healing of the incision is facilitated, the subsequent surgical operations such as clamping of a hemostatic clamp and tissue suturing are facilitated, and the surgical quality is improved; on the other hand, when the tissue of the blade 3 is cut off and falls into the containing cavity, the blade end 1 is in a closed state, if the cut tissue is larger, the conventional surgical scissors and the like can be adopted to stretch into the containing cavity to fragment the cut tissue, the fragmentation process is carried out in the containing cavity of the blade end 1 in the closed state, firstly, the damage of the fragmentation process to the surrounding normal tissue is avoided, the operation quality is further improved, tissue fluid or blood is also reduced or avoided to flow into the body of a patient, the cleaning step of an assistant is saved, and the risk of infection in the body of the patient is also reduced;

furthermore, when the cut tissue is cyst, polyp and other tissues with independent shapes, the cutting edge end 1 completely covers the cut tissue, and the integral rapid cutting and taking out are realized; when the cut tissue has larger volume, the operation can be performed by adopting a step-by-step cutting mode, the cutting process is fast in speed and high in efficiency, and the operation time is favorably shortened.

In a preferred embodiment, the cutting edge tip 1 comprises a plurality of blades 2, the blades 2 are of a sheet-like structure bulging outwards, and the cutting edge 3 is arranged on the blades 2. Through the blade 2 outside bulging, and then hold the chamber in the inboard formation of blade 2 the aforesaid, moreover, adopt sheet structure for 1 weight of cutting edge end is lighter, further makes things convenient for the control to cutting edge end 1.

As a preferred embodiment, the cutting edges 3 are evenly distributed in the circumferential direction. The good consistency can be ensured in the opening process of each blade 3, and the grasping and the prediction of the position of the blade 3 of an operator are facilitated.

In a preferred embodiment, when the blade end 1 is in the open state, the blades 2 are spaced apart from each other, and when the blade end 1 is in the closed state, the blades 2 are connected to each other to form the accommodating cavity.

In a preferred embodiment, when the blade edge tip 1 is in the closed state, the blade 2 surrounds a spherical structure or a spherical crown structure, and the accommodating cavity is located inside the spherical structure or the spherical crown structure.

As another preferred embodiment, when the cutting edge tip 1 is in the closed state, the blade 2 surrounds to form an ellipsoidal structure or an ellipsoidal crown structure, and the accommodating cavity is located inside the ellipsoidal structure or the ellipsoidal crown structure.

In the scheme, the cutting blade has a spherical structure or a spherical crown structure or an ellipsoidal crown structure, the external structure of the cutting blade is smooth, surrounding tissues are prevented from being scratched when the cutting blade tip 1 enters, meanwhile, the cutting blade tip 1 can be used for propping open tissues on an entering path, the operation is further facilitated, and the operation steps are simplified.

As another preferred embodiment, when the blade edge tip 1 is in the closed state, the blade 2 surrounds to form a conical structure or a frustum-shaped structure, and the accommodating cavity is located inside the conical structure or the frustum-shaped structure. The blades 2 are surrounded to form a conical structure or a frustum-shaped structure, and due to the existence of the edge structure, a surgeon can conveniently and reliably master the shape of the cutting edge end 1, so that tissue damage caused by tissue dragging due to torsion of the cutting edge end 1 in the operation process is avoided, and the edge of the cutting edge end 1 can also be used as position reference.

In a preferred embodiment, the tapered structure of the blade tip 1 is a conical shape or a pyramidal shape, and the truncated cone shape of the blade tip 1 is connected to a truncated conical shape or a truncated pyramidal shape.

In a preferred embodiment, the outer wall of the end of the blade tip 1 facing the tissue to be removed is arc-shaped. The arc surface shape is that the outer wall of the end part is rounded, so that the outer end surface of the blade end head 1 is of a smooth transition structure, the blade end head 1 can enter the tissue to be cut off conveniently, and other tissues in the body of a patient can be prevented from being scratched in the entering process. Through the mode of this scheme, further reduce the risk of cutting edge end 1 fish tail patient internal other tissues, also further make things convenient for cutting edge end 1 to strut patient internal tissue and reach the affected part.

In a preferred embodiment, the blade edge tip 1 is divided into individual blades 2 along a generatrix direction.

In a preferred embodiment, the blades 2 are provided with cutting edges 3 along the generatrix of the cutting edge tip 1 on both sides of the cutting edge tip 1.

Through the mode, the blade 2 is switched towards the closed state, the cutting action is carried out, the cutting edge end 1 is closed to be the linear state that the cutting edge 3 is gradually close to, the stable linearity of the tissue cutting process is ensured, and the control of an operating doctor on the state of the operating process is facilitated.

As another preferred embodiment, one side of the blade 2 along the generatrix of the blade tip 1 is a blade edge, the other side plate is a rib, the blade edge is provided with a blade edge 3 along the generatrix direction of the blade tip 1, the rib is a flat side, and the blade edge of the blade 2 is opposite to the rib of the adjacent blade 2. In this kind of mode, the side cooperation through cutting edge 3 and continuous blade 2 realizes the cutting to the tissue, avoids the condition that the dislocation appears when cutting edge 3 is relative with cutting edge 3, ensures the good airtight effect of cutting edge end 1.

As a further preferable scheme, grooves 5 for matching with the corresponding cutting edges 3 are arranged on the retaining edges, and when the cutting edge tips 1 are in a closed state, the cutting edges 3 are positioned in the corresponding grooves 5. The arrangement of the groove 5 further facilitates the cutting action of the blade 3 and also further ensures the sealing effect of the blade tip 1.

As a further preferable scheme, the groove 5 is a V-shaped groove 5. When the cutting edge 3 slides along the side wall of the V-shaped groove, the cutting and separating effects can be more reliably realized, the smoothness of the cut is further ensured, and the operation quality is improved.

In a preferred embodiment, an annular tool seat 6 is further disposed at a lower end of the cutting edge 3, the tool seat 6 is made of a flexible silicone material, and a lower end of each of the blades 2 is embedded in the tool seat 6. The arrangement of the insert seat 6 is such that the edge tip 1 formed by each edge 3 has good integrity and at the same time facilitates a reliable sealing engagement with other structures.

Example 2, as shown in figures 1-3,

the utility model provides a resectoscope for internal tissue excision, includes embodiment 1 arbitrary one kind implementation half open-close type cutting edge end 1, still includes pipe 4, the one end of pipe 4 is for being used for stretching into the internal end that stretches into of patient, and the other end is for being located the external operation end of patient stretch into and serve and be provided with cutting edge end 1, resectoscope is still including being used for the drive cutting edge end 1 is opening the operating means who switches between state and closed state, operating means one end sets up the operating end of pipe 4, the other end with cutting edge end 1 cooperatees.

The resectoscope of the embodiment can be used independently or cooperatively by using a conventional laparoscopic imaging system, and is used for surgical operation with the assistance of the laparoscopic imaging system, during the surgical operation, the catheter 4 enters the body of a patient from a distraction channel at the incision of the abdominal wall of the patient, the blade tip 1 is pushed to the tissue to be resected by the catheter 4, the catheter 4 is a hollow catheter 4 with two open ends, the catheter 4 is made of medical silica gel material or hospital rubber material, the material and mechanical properties of the catheter 4 can be the same as those of the conventional laparoscopic catheter 4, the catheter 4 can be used for entering the body of the patient, and has certain strength and deformability, for example, the catheter 4 is made of the conventional catheter 4 material of an endoscope, and an operator controls the blade tip 1 through the operation end of the operation part to make the blade tip 1 in an open state, then the position and the angle of the blade tip 1 are adjusted through the guide pipe 4, so that each blade 3 is positioned on a required excision separation path, then the blade tip 1 is controlled through the operation end of the operation part, so that the blade tip 1 is switched from an open state to a closed state, and in the process, excision of the tissue to be excised is realized. Because the blade end 1 is adopted, the risk that cut tissues are left in a patient body is directly avoided when the tissues are cut; the operation risk is greatly reduced; moreover, the wound healing is facilitated, and the subsequent surgical operations such as clamping of the hemostatic clamp, tissue suture and the like are facilitated, so that the surgical quality is improved; on the other hand, the assistant cleaning step is saved, and the risk of infection in the body of the patient is reduced; in addition, the excision process is fast, the efficiency is high, and the operation time is favorably shortened.

In a preferred embodiment, a first film sleeve 7 is further hermetically connected between the tool holder 6 and an outer wall of the pushing member 9, and a second film sleeve 8 is further hermetically connected between the pushing member 9 and the sleeve 14.

The first film sleeve 7 and the second film sleeve 8 are made of medical resin films, and both ends of the first film sleeve and the second film sleeve are of open hollow sleeve-shaped structures, so that the first film sleeve and the second film sleeve have good sealing effects and deformation capacity. A well-sealed channel is formed between the blade tip 1 and the catheter 4 through the first thin film sleeve 7 and the second thin film sleeve 8, so that tissue fluid and blood of the excised tissue are further prevented from flowing out, and tissue fragments are prevented from randomly falling into a patient.

As a preferred embodiment, a hanging lug 10 is fixedly connected to the blade 2, a connecting rod 16 is connected to the middle portion or the middle lower portion of the hanging lug 10 through a pin shaft, the other end of the connecting rod 16 is connected to the guide tube 4 through a pin shaft, the operating component comprises a push rod 15 and a pushing component 9 connected to the push rod 15, the pushing component 9 is connected to the lower end of the hanging lug 10 through a pin shaft, when the push rod 15 pushes the pushing component 9 to move beyond the blade end 1, the blade end 1 is gradually opened, and when the push rod 15 pulls the pushing component 9 to move in a direction away from the blade end 1, the blade end 1 is gradually closed.

In a preferred embodiment, the hanging lug 10 is in the shape of an arc bulging outward.

In a preferred embodiment, the pushing member 9 is provided with a plurality of notches 11. The notch 11 is arranged on the pushing component 9, and other surgical instruments such as a minimally invasive surgical scissors and a minimally invasive camera system can enter the accommodating cavity from the catheter 4 to perform surgical auxiliary work, so that the surgical convenience and safety are further improved.

As another preferred embodiment, the pushing member 9 has a ring structure. The annular structure is adopted, so that the pushing component 9 has a larger space, and the operation is further convenient.

In a preferred embodiment, the push rod 15 is a deformable elongated rod structure. The strength of the push rod 15 ensures that the pushing member 9 can be pushed forward smoothly, and the push rod 15 also has a certain elasticity to ensure that sufficient bending deformation can be provided to push the blade tip 1 to the tissue to be excised.

In a preferred embodiment, a guide plate 12 is further disposed in the operation end of the guide tube 4, a plurality of through holes 13 are disposed on the guide plate 12, and an inner wall of at least one through hole 13 is in sliding fit with the push rod 15. The push rod 15 at the operation end is supported by the guide plate 12, and the interference between the push rod 15 and other equipment is reduced.

In a preferred embodiment, the through hole 13 of the guide plate 12 corresponds in position and shape to the notch 11 of the pushing member 9. So set up, further make things convenient for the entering of real surgical equipment.

In a preferred embodiment, the cutter further comprises a sleeve 14, and the inner wall of the sleeve 14 is in clearance fit with the guide tube 4 and the blade tip 1 in the closed state. The sleeve 14 is made of medical silica gel materials, during surgery, the guide tube 4 and the blade end 1 are arranged in the sleeve 14, enter an affected part from an incision of the abdominal wall of a patient together with the sleeve 14, then the blade end 1 is pushed to a tissue to be cut through the guide tube 4, the cutting action of the blade end 1 is controlled through the push rod 15, when the cutting is completed or multiple times of cutting are needed, when the single cutting is completed, other surgical equipment is adopted to clean the cut tissue in the blade end 1 out of the body, or the sleeve 14 is kept still, the guide tube 4 is pulled out of the sleeve 14, and after the tissue in a containing cavity of the blade end 1 is cleaned, the sleeve 14 stretches into the affected part to cut the next layer; after the excision of the whole tissue to be excised, the guide tube 4 and the blade tip 1 are removed, and then other surgical instruments are used for the operation of the subsequent surgical steps, and finally the sleeve 14 is removed.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A half open and close formula cutting edge end for internal tissue excision which characterized in that: the cutting edge end is provided with an opening state and a closing state, when the cutting edge end is in the closing state, a containing cavity is formed in the cutting edge end and is communicated with the inner space of a catheter of the internal tissue resectoscope, the cutting edge end further comprises a plurality of cutting edges, and when the cutting edge end is switched from the opening state to the closing state, the cutting edges scratch tissues to be resected in a patient body, so that the tissues to be resected are cut.

2. The half-split blade tip of claim 1, wherein: the cutting edge end comprises a plurality of blades, the blades are of sheet structures protruding outwards, and the cutting edges are arranged on the blades.

3. The half-split blade tip of claim 2, wherein: the cutting edges are uniformly distributed in the circumferential direction.

4. The half-split blade tip of claim 2, wherein: when the cutting edge end is in an open state, the blades are separated from each other, and when the cutting edge end is in a closed state, the blades are connected to form the accommodating cavity.

5. The half-split blade tip as claimed in any one of claims 2 to 4, wherein: when the end of the blade is in a closed state, the blade is surrounded into a spherical structure or a spherical crown structure, and the accommodating cavity is positioned inside the spherical structure or the spherical crown structure;

or when the end of the blade is in a closed state, the blade surrounds to form an ellipsoidal structure or an ellipsoidal crown structure, and the accommodating cavity is positioned inside the ellipsoidal structure or the ellipsoidal crown structure;

or when the end of the cutting edge is in a closed state, the blades surround to form a conical structure or a frustum-shaped structure, and the accommodating cavity is located inside the conical structure or the frustum-shaped structure.

6. The half-split blade tip of claim 5, wherein: the blade edge end is divided into the blades along the generatrix direction.

7. The half-split blade tip of claim 6, wherein: and the blade is provided with a cutting edge along the direction of the cutting edge end bus on the side edge of the cutting edge end bus.

8. The half-split blade tip of claim 6, wherein: the blade is along the side of cutting edge end generating line, one of them side is the flange, and another curb plate is the flange, be provided with on the flange along cutting edge end generating line direction's cutting edge, the flange is smooth side, the flange of blade is relative with the flange of adjacent blade be provided with on the flange be used for with respectively correspond cutting edge matched with recess, when the cutting edge end is closed state, the cutting edge is located respectively corresponding the recess, the recess is V type recess the cutting edge lower extreme still is provided with annular blade holder, the blade holder adopts flexible silica gel material to make, each the lower extreme embedding of blade is in the blade holder.

9. A resectoscope for internal tissue resection, comprising: comprising the semi-open blade tip of any one of claims 1-8.

10. A resectoscope for internal tissue resection, comprising the semi-open blade tip of claim 8: the cutting device comprises a guide pipe, one end of the guide pipe is an extending end used for extending into a patient body, the other end of the guide pipe is an operating end positioned outside the patient body, a cutting edge end head is arranged on the extending end, the cutting device further comprises a sleeve, the inner wall of the sleeve is in clearance fit with the guide pipe and the cutting edge end head in a closed state, the cutting device further comprises an operating component used for driving the cutting edge end head to be switched between an open state and a closed state, one end of the operating component is arranged at the operating end of the guide pipe, the other end of the operating component is matched with the cutting edge end head, a first film sleeve is further hermetically connected between the cutter holder and the outer wall of the pushing component, a second film sleeve is further hermetically connected between the pushing component and the sleeve, a hanging lug is fixedly connected onto the cutter blade, and a connecting rod is connected to the middle part or the middle, the other end of connecting rod with pipe pin hub connection, operating means include the push rod and with the push part that the push rod links to each other, push part with the lower extreme pin hub connection of hangers, the push rod promotes push part surpasss when the cutting edge end removes, the cutting edge end opens gradually, the push rod pulling push part moves towards deviating from when the direction of cutting edge end removes, the cutting edge end closes gradually, the hangers is the arc form of outwards bulging the last a plurality of breach that is provided with of push part still be provided with the deflector in the pipe operation end be provided with a plurality of through-holes on the deflector, have the inner wall of a through-hole at least with be sliding fit between the push rod, through-hole position and shape on the deflector with the breach on the push part is corresponding.