CN219089247U

CN219089247U - Telescopic aspirator for laparoscopic instrument

Info

Publication number: CN219089247U
Application number: CN202223139312.XU
Authority: CN
Inventors: 于思源
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-05-30
Anticipated expiration: 2032-11-23
Also published as: WO2024109485A1

Abstract

The utility model provides a telescopic aspirator for laparoscopic instruments, which belongs to the technical field of medical instruments and comprises a rod body, a telescopic tube and a driving assembly, wherein the rod body is provided with a clamp rod cavity and a suction cavity, the suction cavity and the clamp rod cavity are arranged along the length direction of the rod body and are mutually isolated, two ends of the clamp rod cavity are opened, the telescopic tube is slidably arranged at the far end of the rod body along the length direction of the rod body and is provided with a part which extends out of the rod body, and the near end of the telescopic tube is communicated with the suction cavity; the drive assembly is arranged at the proximal end of the rod body, and is connected with the telescopic tube and used for driving the telescopic tube to move along the length direction of the rod body. According to the telescopic aspirator for the laparoscopic instrument, the laparoscopic instrument and the aspirator are installed in a matched mode, the telescopic tube is driven by the driving assembly, so that the telescopic tube moves relative to the aspiration cavity, the telescopic aspirator can be suitable for sucking deeper liquid, the aspirator does not need to be replaced, the universality is strong, and the cost is low.

Description

Telescopic aspirator for laparoscopic instrument

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a telescopic aspirator for a laparoscopic appliance.

Background

Laparoscopic surgery is surgery performed using laparoscopes and their associated instruments. The cold light source is used for providing illumination, the laparoscope lens is inserted into the abdominal cavity, and the image shot by the laparoscope lens is conducted to a post-stage signal processing system through the optical fiber by using a digital shooting technology and is displayed on a special monitor in real time. Then, the doctor analyzes and judges the illness state of the patient through the images of different angles of the organs of the patient displayed on the monitor screen, and performs the operation by using a special laparoscope instrument.

The aspirator can be used in the operation process, and the aspirator is used for sucking the contents of hemorrhage, exudation, pus and thoracic viscera in the operation, so that the operation is clear, and the pollution opportunity is reduced. The principle of the aspirator is that the negative pressure state of the aspirator tip is manufactured by a certain method, so that the atmospheric pressure can squeeze the substances outside the aspirator tip to the aspirator tip, thereby completing the effect of 'aspiration'.

In order to avoid the increase of operation time and operation trauma caused by the repeated replacement of surgical instruments or a plurality of surgical openings in the operation process, the technology of integrating the laparoscopic instrument and the aspirator is presented, so that the laparoscopic instrument and the aspirator can be completed without replacing the instruments, but the prior art has the following defects: when the suction device is required to suck deeper liquid or to flush deeper parts in the abdominal cavity, the suction device needs to be replaced when the suction device is not long enough, and the operation time is prolonged due to the replacement of the instrument.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect that the operation time is prolonged due to the need of replacing the aspirator when the aspirator is used for sucking or flushing a deeper area in the prior art, thereby providing the telescopic aspirator for the laparoscopic instrument.

In order to solve the above technical problems, the present utility model provides a telescopic aspirator for a laparoscopic instrument, comprising:

the rod body is provided with a clamp rod cavity and a suction cavity, the suction cavity and the clamp rod cavity are arranged along the length direction of the rod body and are isolated from each other, two ends of the clamp rod cavity are opened, and the clamp rod cavity is used for slidably arranging a clamp rod of a laparoscopic instrument;

the telescopic tube is arranged at the far end of the rod body in a sliding manner along the length direction of the rod body and is provided with a part which at least extends out of the rod body, and the near end of the telescopic tube is communicated with the suction cavity;

the driving assembly is arranged at the proximal end of the rod body, is connected with the telescopic tube and is used for driving the telescopic tube to move along the length direction of the rod body.

Optionally, the method further comprises: the suction nozzle is arranged at the far end of the rod body in a protruding mode, a sliding cavity is formed in the suction nozzle, the sliding cavity is communicated with the suction cavity, and the telescopic tube is arranged in the sliding cavity in a sliding mode.

Optionally, an annular boss is provided at the proximal end of the telescopic tube, and the annular boss is used for limiting outward movement of the telescopic tube.

Optionally, a protrusion for blocking the telescopic tube is provided on the inner wall of the suction chamber at a position spaced apart from the sliding chamber.

Optionally, the suction cavity is disposed below the clamp bar cavity.

Optionally, the driving assembly includes:

the pull rod is arranged in the suction cavity, one end of the pull rod is connected with the telescopic pipe, and the pull rod extends out of the proximal end of the suction cavity;

and the pull ring is connected with one end of the pull rod extending out of the suction cavity.

Optionally, a through hole for penetrating out the pull rod is formed in the proximal end of the suction cavity, a sealing element is arranged on the through hole, and the pull rod passes through the through hole and then slides in a sealing manner through the sealing element.

Optionally, the method further comprises: the switching pipe is fixedly arranged at the proximal end of the rod body and is provided with a communication cavity, the communication cavity is communicated with the suction cavity, and the switching pipe is far away from the center of the rod body through bending.

Optionally, the adapter tube has a portion parallel to the rod body, and a fixing assembly is slidably disposed on the parallel portion, and the fixing assembly has a clamping structure for fixing the laparoscopic instrument.

Optionally, a three-way valve assembly is arranged at the proximal end of the transfer tube, one valve port of the three-way valve assembly is connected with external negative pressure equipment, and the other valve port of the three-way valve assembly is connected with external flushing equipment.

The technical scheme of the utility model has the following advantages:

1. the telescopic aspirator for the laparoscopic instrument comprises a rod body, wherein a suction cavity and a clamp rod cavity which are arranged in parallel and are mutually isolated are arranged in the rod body, the telescopic pipe is arranged at the far end of the suction cavity, the telescopic pipe is driven by a driving assembly to move relative to the suction cavity, the clamp rod cavity is used for sliding the clamp rod of the laparoscopic instrument, the aspirator is attached to a conventional laparoscopic instrument and can freely enter and exit an abdominal cavity along with the laparoscopic instrument, when the laparoscopic instrument is needed, the laparoscopic instrument is slid and pushed forward, the head of the laparoscopic instrument extends out of the clamp rod cavity and exceeds the telescopic pipe, when the aspirator is needed, the rod body is pushed forward, the telescopic pipe exceeds the head of the laparoscopic instrument to perform suction work, the space is saved, the operation is simple, the problem that waste gas and waste liquid are discharged in time during laparoscopic surgery is solved, the visual field definition of the laparoscopic surgery is ensured, and the operation time is effectively shortened.

When the liquid of depths is absorbed to needs, release flexible pipe outwards, accomplish the suction and the operation of washing to the depths position, simple structure, convenient operation need not to change the aspirator, and the commonality is strong, with low costs to in the operation process of attraction, need not to carry out the pull to the body of rod many times, avoid body of rod and internal multiple friction to cause the damage.

2. The telescopic aspirator for the laparoscopic instrument further comprises a suction nozzle, the suction nozzle is arranged at the far end of the suction cavity in a protruding mode, a sliding cavity communicated with the suction cavity is formed in the suction nozzle, the telescopic pipe is arranged in the sliding cavity in a sliding mode, when a part to be sucked is not deeper, the suction process can be completed through the suction nozzle, the telescopic pipe does not need to be pushed, in the normal-depth suction operation, the telescopic pipe does not need to be additionally operated, the telescopic aspirator is simple in structure, and convenient to operate.

3. The annular boss is arranged at the proximal end of the telescopic tube, and is limited in the process of pushing the telescopic tube outwards, so that the telescopic tube is prevented from being pushed out and the attraction structure is prevented from being damaged.

4. The inner wall of the suction cavity provided by the utility model is provided with the bulge, the bulge is used for limiting inward movement of the telescopic pipe, so that the phenomenon that the telescopic pipe is retracted too much in the suction cavity, so that more time is wasted in movement of the telescopic pipe is avoided, and the suction efficiency is reduced.

5. The suction cavity provided by the utility model is arranged below the clamp rod cavity, namely the operation of the laparoscopic instrument is above, and the suction process is below, so that the interference of the suction cavity on the operation of the laparoscopic instrument in the operation process of the laparoscopic instrument is avoided.

6. The driving assembly comprises the pull rod and the pull ring, and the pull rod and the telescopic pipe connected with the pull rod are moved by manually driving the pull ring, so that the driving assembly is simple in structure and convenient to operate, and can be operated by only one person.

7. The suction cavity provided by the utility model is provided with the through hole for penetrating out the pull rod, the through hole is provided with the sealing element, the pull rod is in sealed sliding connection with the sealing element, and the pollution to the environment caused by the seepage of liquid from the proximal end of the suction cavity to the external environment in the sucking process is avoided.

8. The telescopic aspirator for the laparoscopic instrument further comprises the switching tube, the communication cavity of the switching tube is communicated with the aspiration cavity, the switching tube is bent away from the center of the rod body, so that an operation space and the rod body are positioned on the same line, line of sight errors during operation of the laparoscopic instrument are avoided, the arrangement of the switching tube cannot interfere with a clamp body of the laparoscopic instrument, operation and aspiration of the laparoscopic instrument are more accurate, and operation quality is guaranteed.

9. The adapter tube provided by the utility model is provided with a part parallel to the rod body, the parallel part is provided with the fixing component in a sliding way, the fixing component is provided with the clamping structure for fixing the laparoscopic instrument, the clamp rod of the laparoscopic instrument is driven to move in the clamp rod cavity through the sliding of the fixing component, the laparoscopic instrument is fixed on the clamping structure of the fixing component, and the sliding of the fixing component on the adapter tube completes the sliding of the laparoscopic instrument relative to the rod body, so that the adapter tube is simple in structure and convenient to operate.

10. The three-way valve assembly is arranged at the proximal end of the transfer tube, one valve port of the three-way valve assembly is connected with external negative pressure equipment, the other valve port of the three-way valve assembly is connected with external flushing equipment, three states of suction, flushing and closing are realized through the three-way valve assembly, the operation is convenient, the replacement of equipment is not needed, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of one embodiment of a telescopic aspirator for a laparoscopic instrument provided in the present utility model;

FIG. 2 is a view C-C of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 1 with the rod removed;

FIG. 4 is a schematic view of the structure of FIG. 1 with the bellows removed;

FIG. 5 is an enlarged schematic view of a portion of the area A of FIG. 1;

FIG. 6 is a partially enlarged schematic illustration of region B of FIG. 1;

FIG. 7 is a schematic view of the structure of FIG. 1 after mating with a laparoscopic instrument;

FIG. 8 is a schematic view of the connection structure of the adapter and the rod body in FIG. 1;

FIG. 9 is a schematic view of the structure of the laparoscopic instrument in this embodiment;

FIG. 10 is a schematic view of the fastening assembly of FIG. 1;

fig. 11 is a schematic view of another installation position of the clamping structure in fig. 10.

Reference numerals illustrate:

1. a rod body; 2. a clamp rod cavity; 3. a suction chamber; 4. laparoscopic instruments; 5. a clamp lever; 6. a sliding chamber; 7. a telescopic tube; 8. a drive assembly; 9. a suction nozzle; 10. an annular boss; 11. a protrusion; 12. a pull rod; 13. a pull ring; 14. a seal; 15. a support table; 16. a guide hole; 17. a transfer tube; 18. a communication chamber; 19. a fixing assembly; 20. a three-way valve assembly; 21. a through hole; 22. and a clamping structure.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

The telescopic aspirator for the laparoscopic instrument provided by the embodiment is used for attracting contents such as bleeding, exudates and the like in the operation without replacing instruments in the laparoscopic operation, so that the clarity in the operation process is ensured, the pollution opportunity is reduced, and the telescopic aspirator is suitable for all laparoscopic instruments which possibly generate smoke or need to be attracted and flushed in the operation, including but not limited to: ultrasonic blades, bipolar electrocoagulation, monopolar electrocoagulation, and other endoscopic instruments.

As shown in fig. 1-3, a specific implementation manner of the telescopic aspirator for the laparoscopic apparatus provided in this embodiment includes a rod body 1, a telescopic tube 7 and a driving assembly 8, the rod body 1 has a clamp rod cavity 2 and a suction cavity 3, the suction cavity 3 and the clamp rod cavity 2 are all arranged along the length direction of the rod body 1 and are isolated from each other, two ends of the clamp rod cavity 2 are open, and the clamp rod cavity 2 is used for slidably arranging a clamp rod 5 of the laparoscopic apparatus 4; the telescopic tube 7 is slidably arranged at the distal end of the rod body 1 along the length direction of the rod body 1 and is provided with a part which at least extends out of the rod body 1, and the proximal end of the telescopic tube 7 is communicated with the suction cavity 3; the driving component 8 is arranged at the proximal end of the rod body 1, and the driving component 8 is connected with the telescopic pipe 7 and is used for driving the telescopic pipe 7 to move along the length direction of the rod body 1. The suction device is arranged on a conventional laparoscopic instrument 4, the laparoscopic instrument 4 is optionally moved in and out of the abdominal cavity, when the laparoscopic instrument 4 is needed to be used, the laparoscopic instrument 4 is slid and pushed forward, the head of the laparoscopic instrument 4 extends out of the clamp rod cavity 2 and exceeds the telescopic tube 7, the telescopic tube 7 does not influence the operation of the laparoscopic instrument 4, when the suction device is needed to be used, the rod body 1 is pushed forward, the telescopic tube 7 exceeds the head of the laparoscopic instrument 4, suction work is carried out, when deeper liquid is needed to be sucked or deeper parts in the abdominal cavity are flushed, the telescopic tube 7 is driven by the driving assembly 8, and the suction device is pushed out continuously, so that the purposes of sucking clean deep blood, flushing liquid and the like can be realized on the premise that the use of the laparoscopic instrument 4 is not influenced, the suction device is simple in structure, the suction device is convenient to operate, the universality is high, the cost is low, the rod body 1 does not need to be pulled for multiple times in the suction operation process, and friction damage caused by the rod body 1 and the body in vivo is avoided.

Through the cooperation of aspirator and conventional laparoscopic instrument 4, accomplished the integration to aspirator and laparoscopic instrument 4, aspirator and laparoscopic instrument 4 are detachable simultaneously, are convenient for change different laparoscopic instrument 4, and the commonality is strong, can not cause the apparatus extravagant.

As shown in fig. 1-4, the telescopic aspirator for a laparoscopic instrument provided in this embodiment further includes a suction nozzle 9, the suction nozzle 9 is convexly disposed at a distal end of the rod body 1, a sliding cavity 6 is disposed in the suction nozzle 9, the sliding cavity 6 is communicated with the suction cavity 3, and the telescopic tube 7 is slidably disposed in the sliding cavity 6. The suction nozzle 9 and the rod body 1 can be manufactured by adopting an integral injection molding process, and the device is low in cost and convenient to use. When the part needing to be attracted is not deeper, the attraction process can be completed only through the suction nozzle 9, the telescopic pipe 7 is not required to be pushed, the telescopic pipe 7 is not required to be additionally operated in the attraction work of normal depth, the telescopic pipe 7 is hidden in the rod body 1, and the suction device is simple in structure and convenient to operate. Alternatively, the suction nozzle 9 may not be provided, and the telescopic tube 7 may be directly slidably provided at the distal end of the suction chamber 3, and the telescopic tube 7 may be pushed out every time the suction operation is performed.

As shown in fig. 3, in the telescopic aspirator for a laparoscopic instrument provided in this embodiment, an annular boss 10 is provided at the proximal end of the telescopic tube 7, the annular boss 10 is used for limiting outward movement of the telescopic tube 7, avoiding pushing the telescopic tube 7 out of the rod body 1 in the pushing process, breaking the suction structure after separating from the rod body 1, and failing to complete the suction work, and in addition, as an alternative embodiment, other structures, for example, a square boss may be provided at the proximal end of the telescopic tube 7, so that the telescopic tube 7 can be clamped at the distal end of the suction nozzle 9 when moving outward, thereby avoiding dropping of the telescopic tube 7.

As shown in fig. 5, in the telescopic aspirator for a laparoscopic instrument provided in this embodiment, the protrusion 11 for blocking the telescopic tube 7 is provided on the inner wall of the aspiration cavity 3 at a position spaced from the sliding cavity 6, so that the telescopic tube is prevented from being retracted too much in the aspiration cavity, resulting in a waste of time due to movement of the telescopic tube, and the aspiration efficiency is reduced. In addition, as an alternative embodiment, the telescopic tube 7 may be blocked by providing another structure, for example, a ring-shaped protrusion may be provided on the inner wall of the suction chamber 3 to limit the telescopic tube, the suction chamber 3 may be provided with a variable diameter structure, and the inner diameter of a section spaced from the sliding chamber 6 is set smaller than the outer diameter of the telescopic tube 7, and the limiting of the telescopic tube 7 is completed by the difference in thickness.

As shown in fig. 1 to 4, in the telescopic aspirator for a laparoscopic instrument provided in this embodiment, the aspiration cavity 3 is disposed below the clamp rod cavity 2, so as to avoid interference of the aspiration cavity 3 with the line of sight of the laparoscopic instrument 4 during operation of the laparoscopic instrument 4. In addition, as an alternative embodiment, the suction chamber 3 may be provided in other directions of the jaw bar chamber 2.

As shown in fig. 3, in the telescopic aspirator for a laparoscopic instrument provided in this embodiment, the driving assembly 8 includes a pull rod 12 and a pull ring 13, the pull rod 12 is disposed in the suction cavity 3, one end of the pull rod 12 is connected with the telescopic tube 7, the pull rod 12 extends out of the proximal end of the suction cavity 3, and the pull ring 13 is connected with one end of the pull rod 12 extending out of the suction cavity 3. Through manual drive pull ring 13, realized the removal of pull rod 12 and flexible pipe 7 rather than being connected, simple structure, convenient operation only needs one person to realize the operation to flexible pipe 7. In addition, as an alternative embodiment, the pull ring 13 may be provided in other configurations that facilitate manual hand manipulation.

As shown in fig. 6, the proximal end of the suction cavity 3 provided in this embodiment is provided with a through hole 21 for penetrating out the pull rod 12, the through hole 21 is provided with a sealing member 14, and the pull rod 12 passes through the through hole 21 and then slides in a sealing manner through the sealing member 14. Avoiding the leakage of liquid from the proximal end of the aspiration lumen 3 to the external environment during aspiration, which could cause environmental pollution. The sealing member 14 may be a sealing member such as silica gel or rubber, the through holes 21 may be formed in the side wall of the suction chamber 3, the sealing member 14 is disposed between the through holes 21 to complete the sealing sliding of the pull rod 12, and in addition, as an alternative embodiment, the sealing member 14 may be disposed at the proximal end of the suction chamber 3, the through holes 21 are formed in the sealing member 14, the sealing member 14 has extrudability on the pull rod 12 passing through the through holes 21, and thus the sealing effect is completed.

As shown in fig. 6, the proximal end of the rod body 1 provided in this embodiment is provided with a support table 15, the support table 15 is provided with a guide hole 16, and one end of the pull rod 12 extending out of the suction cavity 3 passes through the guide hole 16. The guide hole 16 not only has a supporting function on the pull rod 12, but also has a guiding function in the moving process of the pull rod 12, so that the stability of the aspirator in the pulling process of the pull rod 12 is ensured.

As shown in fig. 7-9, in the telescopic aspirator for a laparoscopic apparatus provided in this embodiment, the telescopic aspirator further includes a transfer tube 17, the transfer tube 17 is fixedly disposed at a proximal end of the rod body 1, the transfer tube 17 has a communication cavity 18, the communication cavity 18 is communicated with the suction cavity 3, and the transfer tube 17 is bent away from a center of the rod body 1. The liquid in the suction cavity 3 is sucked and led out through the bent communication cavity 18, so that the operation space and the rod body 1 are positioned on the same line, line of sight errors during operation of the laparoscopic instrument can not be caused, the arrangement of the transfer tube 17 can not interfere with the forceps body of the laparoscopic instrument 4, operation of the laparoscopic instrument 4 and suction operation are more accurate, and operation quality is guaranteed.

As shown in fig. 7 and 10, in the telescopic aspirator for a laparoscopic instrument provided in this embodiment, the adaptor tube 17 has a portion parallel to the rod body 1, and a fixing assembly 19 is slidably disposed on the parallel portion, and the fixing assembly 19 has a clamping structure 22 for fixing the laparoscopic instrument 4. The clamp rod 5 of the laparoscopic instrument 4 is driven to move in the clamp rod cavity 2 through the sliding of the fixing assembly 19, the laparoscopic instrument 4 is fixed on the clamping structure 22 of the fixing assembly 19, the sliding of the fixing assembly 19 on the adapter tube 17 completes the sliding of the laparoscopic instrument 4 relative to the rod body 1, and the laparoscopic instrument is simple in structure and convenient to operate. The fixing component 19 may be a sliding fixing clip, which has a knob thereon, and when the knob is screwed, the sliding fixing clip is fixedly arranged on the adapter 17, and when the knob is loosened, the sliding fixing clip is slidably arranged on the adapter 17, and the clamping structure 22 may be an elastic clip, so that the structure is simple, and the fixing and the dismounting are simple and convenient.

As shown in fig. 10 and 11, the clamping structure 22 provided in this embodiment may be disposed at different positions of the fixing assembly 19, for example, the clamping structure 22 may be disposed on the right side of the fixing assembly 19, i.e., the laparoscopic instrument 4 is disposed on the right side of the transfer tube 17, the clamping structure 22 may also be disposed on the left side of the fixing assembly 19, i.e., the laparoscopic instrument 4 is disposed on the left side of the transfer tube 17, and when the fixing assembly 19 with different positions is used, only the rod body 1 and the transfer tube 17 need to be correspondingly rotated, so as to realize the change of the relative positions between the transfer tube 17 and the laparoscopic instrument 4, thereby satisfying the habit of the left and right hands of different doctors, and also performing different selections according to the use conditions of different instruments.

As shown in fig. 7, in the telescopic aspirator for a laparoscopic instrument provided in this embodiment, a three-way valve assembly 20 is disposed at a proximal end of the adapter tube 17, one valve port of the three-way valve assembly 20 is connected to an external negative pressure device, and the other valve port of the three-way valve assembly 20 is connected to an external flushing device. Three states of suction, flushing and closing are realized through the three-way valve assembly 20, the operation is convenient, the replacement of instruments is not needed, and the working efficiency is improved. In addition, as an alternative embodiment, the proximal end of the adapter tube 17 may be connected to different pipelines through a three-way tube, and each pipeline is separately provided with a valve to control on-off of the pipeline, so as to realize different functions of the aspirator.

The proximal end of the transfer tube 17 provided in this embodiment is a luer connector, the interface of the three-way valve assembly 20 is a luer connector port, the luer connector is a standard medical connector, and the transfer tube can be firmly connected and matched with other medical drainage devices, and the connection is reliable and is not easy to fall off.

The working process comprises the following steps: when laparoscopic surgery is performed, the aspirator and the laparoscopic instrument 4 are installed in advance, the clamp rod 5 of the laparoscopic instrument 4 is inserted into the clamp rod cavity 2, and then the clamping structure 22 is connected with the clamp body of the laparoscopic instrument 4, so that the aspirator and the laparoscopic instrument 4 are integrated and randomly moved into and out of the abdominal cavity along with the laparoscopic instrument 4; when in operation, the aspirator is slid back to the rear, the aspirator is locked by the fixing component 19, and the head of the aspirator is within 10-20mm of the rear part of the jaw of the laparoscopic instrument 4 at the moment, namely the aspirator does not influence the operation of the laparoscopic instrument 4; when the aspirator is needed, a doctor of the main knife can open the fixing component 19 by one hand according to the operation requirement, push the aspirator forward to the required length and lock the aspirator again, the aspirator can integrally slide for about 30mm away from the front end of the laparoscopic instrument, the aspiration and flushing operation can be directly completed, the operation efficiency of the doctor of the main knife is greatly improved, and the possibility of error of personnel cooperation is reduced.

In some operations, if it is necessary to suck deeper liquid or flush deeper parts in the abdominal cavity, the telescopic tube 7 is pushed forward by pushing the pull ring 13, so as to push out the telescopic tube 7 hidden in the suction nozzle 9, thereby greatly increasing the suction length, and the telescopic tube 7 can exceed the head of the aspirator by about 50mm, so that the purpose of sucking deep blood, flushing liquid and the like cleanly can be achieved without affecting the use of the laparoscopic instrument 4.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims

1. A telescopic aspirator for laparoscopic instruments, comprising:

the rod body (1) is provided with a clamp rod cavity (2) and a suction cavity (3), the suction cavity (3) and the clamp rod cavity (2) are arranged along the length direction of the rod body (1) and are isolated from each other, two ends of the clamp rod cavity (2) are open, and the clamp rod cavity (2) is used for slidably arranging a clamp rod (5) of a laparoscopic instrument (4);

the telescopic tube (7) is arranged at the far end of the rod body (1) in a sliding manner along the length direction of the rod body (1) and is provided with a part which at least extends out of the rod body (1), and the near end of the telescopic tube (7) is communicated with the suction cavity (3);

the driving assembly (8) is arranged at the proximal end of the rod body (1), and the driving assembly (8) is connected with the telescopic tube (7) and used for driving the telescopic tube (7) to move along the length direction of the rod body (1).

2. The telescopic aspirator for a laparoscopic instrument according to claim 1, further comprising: the suction nozzle (9) is arranged at the far end of the rod body (1) in a protruding mode, a sliding cavity (6) is formed in the suction nozzle (9), the sliding cavity (6) is communicated with the suction cavity (3), and the telescopic tube (7) is arranged in the sliding cavity (6) in a sliding mode.

3. Telescopic aspirator for laparoscopic instrument according to claim 2, characterized in that the proximal end of the telescopic tube (7) is provided with an annular boss (10), which annular boss (10) is used for limiting the outward movement of the telescopic tube (7).

4. Telescopic aspirator for laparoscopic instrument according to claim 2, characterized in that the inner wall of the aspiration lumen (3) has a protrusion (11) for blocking the telescopic tube (7) in a position spaced apart from the sliding lumen (6).

5. Telescopic aspirator for laparoscopic instrument according to claim 1, characterized in that the aspiration lumen (3) is provided below the clamp bar lumen (2).

6. Telescopic aspirator for laparoscopic instrument according to claim 1, characterized in that the drive assembly (8) comprises:

the pull rod (12) is arranged in the suction cavity (3), one end of the pull rod (12) is connected with the telescopic pipe (7), and the pull rod (12) extends out of the proximal end of the suction cavity (3);

and the pull ring (13) is connected with one end of the pull rod (12) extending out of the suction cavity (3).

7. Telescopic aspirator for laparoscopic instrument according to claim 6, characterized in that the proximal end of the aspiration lumen (3) is provided with a through hole (21) for passing out the pull rod (12), the through hole (21) is provided with a sealing member (14), and the pull rod (12) is sealed and slid by the sealing member (14) after passing through the through hole (21).

8. The telescopic aspirator for a laparoscopic instrument according to claim 1, further comprising: the switching pipe (17) is fixedly arranged at the proximal end of the rod body (1), the switching pipe (17) is provided with a communication cavity (18), the communication cavity (18) is communicated with the suction cavity (3), and the switching pipe (17) is far away from the center of the rod body (1) through bending.

9. Telescopic aspirator for laparoscopic instrument according to claim 8, characterized in that the adapter tube (17) has a portion parallel to the shaft body (1) on which a fixing assembly (19) is slidingly arranged, the fixing assembly (19) having a snap-in structure (22) for fixing the laparoscopic instrument (4).

10. Telescopic aspirator for laparoscopic instrument according to claim 8, characterized in that the proximal end of the adapter tube (17) is provided with a three-way valve assembly (20), one valve port of the three-way valve assembly (20) is connected with an external negative pressure device, and the other valve port of the three-way valve assembly (20) is connected with an external flushing device.