Balloon type cannula puncture outfit for unilateral double-channel endoscope
By designing an expandable balloon-type cannula puncture device, the problems of expansion of the operating channel and poor water flow in UBE technology were solved, and the endoscopic surgical space was expanded and the water flow was maintained unobstructed without increasing trauma, which facilitated subsequent surgical operations.
Patent Information
- Application Number
- CN202422281207.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-09-18
AI Technical Summary
In existing UBE technology, the expansion of the operating channel and poor water flow lead to unclear vision. Conventional methods increase surgical trauma and it is difficult to effectively create operating gaps and space.
A balloon-type cannula puncture device is designed, which includes expandable first and second inflatable balloons and a dilator. The expansion and contraction are controlled by an external gas source to form and maintain an operating channel, expand the endoscopic surgical space, and maintain the expansion of the incision through the dilator.
It achieves the rapid expansion of endoscopic surgical space without increasing surgical trauma, keeps the operating channel unobstructed and the water outflow smooth, and facilitates subsequent surgical operations.
Smart Images
Figure CN223438606U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of medical apparatus and instruments, especially to a balloon type cannula puncture device for unilateral double-channel endoscope. BACKGROUND
[0002] The UBE technology is a unilateral double-channel endoscope technology, which is mainly used for minimally invasive endoscopic surgery in the posterior approach of the spine, and is suitable for minimally invasive surgical treatment of various diseases such as removal of intervertebral disc of the spine, decompression of spinal stenosis, fusion fixation of lumbar spondylolisthesis, etc. One of the keys to the operation is to establish two channels and surgical operation gaps and spaces, one of which is an endoscope channel, and the other is an operation channel, which is similar to arthroscopic technology, but different from arthroscopic surgery. The interstitial space of the joint already exists in human physiology, but the UBE operation gap and space need to be established after the two channels are established, and the muscle and other tissues are stripped to expand the potential interstitial space between the vertebral plate, spinous process and multifidus muscle. Therefore, the manufacture of the operation gap and space is one of the keys to the success of the operation.
[0003] The current conventional method is to use a dissector and an electrode under the endoscope to strip the muscle and fat tissue from the surface of the junction between the vertebral plate and the spinous process to create an operation gap and space, but this method is complicated and time-consuming, and sometimes the effect is not good. In addition, in the current UBE technology, water flows from the endoscope channel into the operation gap, and flows out of the body from the operation channel to maintain the clarity under the mirror. Therefore, maintaining the smooth water flow of the operation channel is the key to obtaining a clear surgical field for UBE. The conventional operation channel incision is generally slightly larger than the diameter of the instrument to facilitate the water flow from the operation channel (the water enters through the water channel provided in the endoscope from the endoscope channel). However, the conventional method may not be smooth due to the blockage of the deep fascia and muscle, resulting in unclear vision. The current commonly used method is to enlarge the operation channel, but this will increase the surgical incision and trauma of the operation channel.
[0004] Therefore, how to provide an expandable balloon type puncture device that can create an UBE operation gap and space after completing the puncture, and also facilitate the expansion and maintenance of the smooth and smooth water flow of the operation channel, is a problem that needs to be solved by those skilled in the art. UTILITY MODEL CONTENTS
[0005] The utility model solves the technical problem in the above technical status, and provides a balloon type cannula puncture device for unilateral double-channel endoscope, which can create an UBE operation gap and space after completing the puncture by an expandable balloon, and also facilitate the expansion and maintenance of the smooth and smooth water flow of the operation channel.
[0006] The utility model discloses a technical scheme that solves the above technical problems, which is a balloon type cannula puncture device for unilateral double-channel endoscope, comprising a puncture device body capable of being placed into the body to form an operation channel, a handle is arranged at the proximal end of the puncture device body, a sharp part is formed at the distal end of the puncture device body to facilitate puncture into the body, a guide channel is formed in the puncture device body to allow a guide needle previously placed into the body to be inserted from the distal end to the proximal end, a first inflatable balloon capable of expanding outward to form a spherical shape is arranged on the peripheral side of the sharp part of the puncture device body, a second inflatable balloon capable of expanding outward to form a cylindrical shape is further arranged on the peripheral side of the puncture device body, the first inflatable balloon and the second inflatable balloon are connected to an external air source, so that the first inflatable balloon and the second inflatable balloon can be expanded or contracted under the control of the external air source, an expander is further arranged at the proximal end of the puncture device body to keep the proximal incision of the operation channel expanded, the puncture device body is pulled out of the body after expansion, and the expander remains in the operation channel until it is removed after the operation is completed.
[0007] In order to optimize the spatial layout of the entire operation channel, preferably, the spherical diameter of the first inflatable balloon is greater than the cylindrical diameter of the second inflatable balloon.
[0008] In order to make the puncture device body provided with the first inflatable balloon better enter the human body, preferably, the sharp part at the distal end of the puncture device body protrudes from the side of the first inflatable balloon, so that the puncture device body is more easily inserted into the body.
[0009] In order to optimize the overall structure of the expander and make it better keep the incision expanded, preferably, the expander comprises a first expander and a second expander, the first expander and the second expander are mutually enclosed and can be sleeved on the puncture device body, and an elastic member is further connected between the first expander and the second expander to keep the first expander and the second expander in an expanded state at all times.
[0010] In order to make the expander better adapt to the puncture device body and also better be fixed at the incision, preferably, the cross sections of the first expander and the second expander are both arc-shaped to adapt to the puncture device body, and the upper and lower ends of the first expander and the second expander are both formed with edges that expand radially outward to facilitate fixation on the skin at the incision.
[0011] In order to make the expander better be placed into or separated from the incision, preferably, the height of the first expander is greater than the height of the second expander.
[0012] In order to optimize the structure of the elastic member, so that it can better form elasticity for the first expander and the second expander, preferably, the elastic member is a torsion spring connected between the first expander and the second expander, the torsion spring is provided with two, and the two torsion springs are oppositely connected to the two side portions of the first expander and the second expander respectively, and in the state that the puncture device body is separated from the operation channel, the first expander and the second expander can be relatively retracted by pressing the outer side of the first expander and / or the second expander to be separated from the incision of the operation channel.
[0013] In order to facilitate the operation of the whole puncture device, preferably, a plurality of anti-skid grooves are formed on the outer circumferential surface of the handle and are arranged at intervals in the circumferential direction.
[0014] Compared with the prior art, the utility model has the advantages that: by setting the first inflatable bag capable of expanding outward to be spherical on the outer circumferential side of the sharp portion of the puncture device body, and setting the second inflatable bag capable of expanding outward to be cylindrical on the outer circumferential side of the puncture device body, and also making the first inflatable bag and the second inflatable bag both communicate with the external air source, so that the first inflatable bag and the second inflatable bag can both realize expansion or contraction under the operation of the external air source, the puncture portion body can enter the human body under the guidance of the guide needle placed in the body in the early stage, so that the operation channel for the surgical instrument to enter can be formed in the unilateral double-channel endoscope, and then the first inflatable bag and the second inflatable bag are driven to expand by connecting the external air source, so that the distal end and the middle end of the operation channel can quickly expand the space, especially the spherical balloon type expansion at the sharp portion, which can effectively expand the interstitial space between the vertebral plate, the spinous process and the multifidus muscle in the endoscopic surgery, so that the puncture device can not only complete the puncture, but also conveniently create the operation gap and space of the UBE; and the expander capable of keeping the proximal incision of the operation channel always expanded is sleeved on the puncture device body, so that the proximal incision of the operation channel is always kept unobstructed and smooth for water flow; when the first inflatable bag and the second inflatable bag are both in the deflated and contracted state, the puncture device body can be removed from the operation channel, and the expander is retained on the skin at the incision to keep the incision expanded, so as to facilitate the subsequent surgical operation, until the expander is removed after the surgery is completed. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the embodiment (the first inflatable bag and the second inflatable bag are in the deflated and contracted state);
[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the embodiment (the first inflatable bag and the second inflatable bag are in the deflated and contracted state);
[0017] Figure 3 It is a sectional view schematic diagram of the first inflatable bag and the second inflatable bag in the inflated state of the embodiment;
[0018] Figure 4It is a structure schematic diagram of the puncture body and dilator in the embodiment;
[0019] Figure 5 It is a structure schematic diagram of the dilator in the embodiment. DETAILED DESCRIPTION
[0020] The utility model will be described further in detail below in combination with the embodiment of the drawings.
[0021] As Figures 1-5 shown, the balloon type cannula puncture device for unilateral double channel endoscope in the embodiment mainly comprises an outer puncture body 1 and a dilator 7.
[0022] As Figure 1 and Figure 3 shown, the proximal end of the puncture body 1 is provided with a handle 2, and the distal end is formed with a sharp part 3 which is beneficial to be stabbed into the body, and the inside of the puncture body 1 is further formed with a guide channel 4 for inserting a guide needle A from the distal end to the proximal end which is placed in the body in the early stage, and the outer circumferential side of the sharp part 3 of the puncture body 1 is provided with a first inflatable bag 5 which can be expanded outward to be spherical, and the outer circumferential side of the puncture body 1 is further provided with a second inflatable bag 6 which can be expanded outward to be cylindrical, and the first inflatable bag 5 and the second inflatable bag 6 are both communicated with an external air source, so that the first inflatable bag 5 and the second inflatable bag 6 can be expanded or contracted under the control of the external air source, and the proximal end of the puncture body 1 is further provided with a dilator 7 for keeping the proximal end incision of the operation channel expanded.
[0023] In order to optimize the spatial layout of the whole operation channel, so that the interstice between the vertebral plate, the spinous process and the multifidus muscle can be better expanded, as Figure 2 shown, in the embodiment, the handle 2 is provided with a connecting head 2a which can be communicated with the external air source, the first inflatable bag 5 is connected with the connecting head 2a through a first connecting pipe 5a, the second inflatable bag 6 is connected with the connecting head 2a through a second connecting pipe 6a, and the first connecting pipe 5a and the second connecting pipe 6a are both built-in the puncture body 1 to avoid affecting the puncture.
[0024] Secondly, in order to optimize the spatial layout of the whole operation channel, in the embodiment, the spherical diameter of the first inflatable bag 5 is specially made to be greater than the cylindrical diameter of the second inflatable bag 6.
[0025] In addition, in order to make the puncture body provided with the first inflatable bag 5 better enter the human body, in the embodiment, the sharp part 3 located at the distal end of the puncture body 1 is specially made to protrude from the side of the first inflatable bag 5, so that the puncture body 1 is easier to be inserted into the body.
[0026] At the same time, in order to optimize the overall structure of the dilator 7, so that it can better keep the incision expanded, in the embodiment, asFigure 4 and Figure 5 As shown, the expander 7 here includes a first expander 7a and a second expander 7b. The first expander 7a and the second expander 7b are surrounded by each other and can be sleeved on the puncture device body 1. It should be noted here that only when the first inflatable bag 5 and the second inflatable bag 6 are in a contracted state, the expander 7 will be more easily inserted from the distal end to the proximal end of the puncture device body 1. An elastic member 7c is also connected between the first expander 7a and the second expander 7b to enable the first expander 7a and the second expander 7b to always maintain an outward expanded state.
[0027] In this embodiment, in order to make the expander 7 better adapt to the puncture device body 1 and at the same time make the expander 7 better fixed on the skin incision, the cross-sections of the first expander 7a and the second expander 7b are both outer arc-shaped and adapted to the puncture device body 1, and the upper and lower ends of the first expander 7a and the second expander 7b are formed with radially outward-flashing edges 7a1 to facilitate fixation on the skin at the incision.
[0028] In addition, in order to make the expander 7 easier to be placed into or removed from the skin incision, the height of the first expander 7a is intentionally greater than the height of the second expander 7b.
[0029] refer to Figure 4 and Figure 5 As shown, in order to optimize the structure of the elastic member 7c so that it can better form elasticity for the first expander 7a and the second expander 7b, the elastic member 7c in this embodiment is a torsion spring connected between the first expander 7a and the second expander 7b. Two torsion springs are provided, and the two torsion springs are connected to the two side portions of the first expander 7a and the second expander 7b in an opposite shape. When the puncture device body 1 is in a state of being out of the operating channel, by pressing the outer side of the first expander 7a and / or the second expander 7b, the first expander 7a and the second expander 7b can be relatively retracted and out of the incision of the operating channel.
[0030] refer to Figure 1 As shown, in this embodiment, in order to facilitate the manipulation of the entire trocar 1 , a plurality of anti-slip grooves 2 b are formed on the outer circumferential surface of the handle 2 at intervals along the circumferential direction.
[0031] Here, it needs to be explained that in this embodiment, by setting the first inflatable balloon 5 capable of expanding outward to a spherical shape on the outer peripheral side of the sharp portion 3 of the puncture device body 1, and setting the second inflatable balloon 6 capable of expanding outward to a cylindrical shape on the outer peripheral side of the puncture device body 1, and also making the first inflatable balloon 5 and the second inflatable balloon 5 both communicate with the external air source, so that the first inflatable balloon 5 and the second inflatable balloon 6 can both expand or contract under the control of the external air source, we can place the guide needle A in the body through fluoroscopy positioning in the early stage, and the puncture device body 1 can puncture into the specified surgical position of the human spine along the guide needle A, so as to form an operating channel for surgical instruments to enter in the unilateral double-channel endoscope, and then expand the first inflatable balloon 5 and the second inflatable balloon 6 by connecting the external air source, so that the distal end and the middle end of the operating channel can quickly expand the space, especially the balloon type expansion at the sharp portion 3, which can effectively expand the interstitial space between the vertebral plate, the spinous process and the multifidus muscle in the endoscopic surgery, so that the puncture device can complete the puncture while also conveniently creating the operating gap and space of the UBE; and also by sleeving the dilator 7 on the puncture device body 1, which can always keep the proximal incision of the operating channel expanded, so that the proximal incision of the operating channel is always kept unobstructed and smooth water flow; when the first inflatable balloon 5 and the second inflatable balloon 6 are both in the deflated and contracted state, the puncture device body 1 can be removed from the operating channel, and the dilator 7 can be left on the skin at the incision to keep the incision expanded, thereby facilitating subsequent surgical operations, and the dilator 7 is removed only after the surgery is completed.
[0032] It should be noted that in the description of the present embodiment, the terms "front, rear, left, right, upper, lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
Claims
1. A balloon-type cannula puncture device for a unilateral dual-channel endoscope, comprising a puncture device body (1) that can be placed into the body to form an operating channel, a handle (2) being provided at the proximal end of the puncture device body (1), and a pointed portion (3) being formed at the distal end to facilitate puncture into the body, characterized in that: The interior of the puncture device body (1) is formed with a guide channel (4) for inserting a guide needle (A) previously inserted into the body from the distal end into the proximal end. The outer peripheral side of the tip (3) of the puncture device body (1) is provided with a first inflatable bag (5) that can expand outward into a spherical shape. The outer peripheral side of the puncture device body (1) is also provided with a second inflatable bag (6) that can expand outward into a cylindrical shape. The first inflatable bag (5) and the second inflatable bag (6) are both connected to an external air source, so that the first inflatable bag (5) and the second inflatable bag (6) can be expanded or contracted under the control of the external air source. The proximal end of the puncture device body (1) is also provided with an expander (7) for keeping the proximal incision of the operation channel expanded.
2. The balloon-type cannula puncture device for unilateral dual-channel endoscopy according to claim 1, characterized in that: The handle (2) is provided with a connector (2a) capable of being connected to an external air source. The first inflatable bag (5) is connected to the connector (2a) by providing a first connecting tube (5a). The second inflatable bag (6) is connected to the connector (2a) by providing a second connecting tube (6a). The first connecting tube (5a) and the second connecting tube (6a) are both built into the trocar body (1).
3. The balloon-type cannula puncture device for unilateral dual-channel endoscopy according to claim 1, characterized in that: The spherical diameter of the first inflatable bag (5) is greater than the cylindrical diameter of the second inflatable bag (6).
4. The balloon-type cannula puncture device for unilateral dual-channel endoscopy according to claim 1, characterized in that: The tip (3) at the distal end of the puncture device body (1) protrudes from the side of the first inflatable bag (5), making it easier for the puncture device body (1) to be inserted into the body.
5. The balloon-type cannula puncture device for unilateral dual-channel endoscopy according to any one of claims 1 to 4, characterized in that: The expander (7) includes a first expander (7a) and a second expander (7b). The first expander (7a) and the second expander (7b) are mutually enclosed and can be sleeved on the puncture device body (1). An elastic member (7c) is also connected between the first expander (7a) and the second expander (7b) to enable the first expander (7a) and the second expander (7b) to always maintain an outwardly expanded state.
6. The balloon-type cannula puncture device for unilateral dual-channel endoscopy according to claim 5, characterized in that: The cross-sections of the first expander (7a) and the second expander (7b) are both in an outer arc shape that matches the puncture device body (1), and the upper and lower ends of the first expander (7a) and the second expander (7b) are both formed with edges (7a1) that expand radially outward to facilitate fixation on the skin at the incision.
7. The balloon-type cannula puncture device for unilateral dual-channel endoscopy according to claim 5, characterized in that: The height of the first expander (7a) is greater than the height of the second expander (7b).
8. The balloon-type cannula puncture device for unilateral dual-channel endoscopy according to claim 5, characterized in that: The elastic member (7c) is a torsion spring connected between the first expander (7a) and the second expander (7b). Two torsion springs are provided, and the two torsion springs are connected to the two side portions of the first expander (7a) and the second expander (7b) in an opposite shape. When the puncture device body (1) is in a state of being out of the operating channel, the first expander (7a) and the second expander (7b) can be relatively retracted and out of the incision of the operating channel by pressing the outer side of the first expander (7a) and / or the second expander (7b).
9. The balloon-type cannula puncture device for unilateral dual-channel endoscopy according to claim 1, characterized in that: A plurality of anti-slip grooves (2b) arranged at intervals along the circumferential direction are formed on the outer peripheral surface of the handle (2).