A trocar with a balloon fixing device

Abstract

The utility model provides a puncture device with a balloon fixing device, including a first tube body, a second tube body and a balloon fixing device, wherein the first tube body is used to guide the instrument; the second tube body is sleeved on the first tube body, and a gas channel is formed between the second tube body and the first tube body; a gas interface is provided at the proximal end of the first tube body, and a balloon is provided at the distal end of the first tube body, and the balloon and the gas interface are connected through the gas channel; the balloon is configured to dock with the gas injected from the gas interface and transported by the gas channel to expand and expand in the patient's body; the balloon fixing device is arranged on the second tube body and is located on a side of the balloon close to the gas interface, and is used to contact the patient's body surface to fix the position of the balloon in the patient's body. The utility model achieves the fixation of the puncture device through the cooperation between the first tube body, the second tube body, the gas channel, the balloon and the balloon fixing device, and avoids the deviation of the balloon affecting the operation, thereby improving the reliability and safety of the puncture device.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a puncture device with a balloon fixing device. Background Art

[0002] Puncture is a commonly used surgical term in medicine. It is a diagnostic and treatment technique in which a puncture needle is inserted into the body cavity to extract secretions for testing, inject gas or contrast agent into the body cavity for imaging examination, or inject medicine into the body cavity. The balloon is inflated and expanded inside the patient's body after puncture, thereby providing a good operating space, which facilitates the subsequent use of an endoscope or other surgical instruments to perform targeted operations according to actual needs.

[0003] However, in the existing balloon puncture device, after the puncture device is inserted into the patient's body, if the patient or medical staff slightly touches the puncture device sleeve, it will cause a large shake, causing the position of the balloon in the patient's body to shift, making it impossible to accurately control the puncture position and depth, increasing the difficulty of operation for medical staff and further affecting the efficiency of the operation. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model proposes a trocar with a balloon fixing device, which has the advantages of reasonable design, simple structure, firm fixation and not easy to deviate.

[0005] This is achieved specifically through the following technical solutions:

[0006] A trocar with a balloon fixing device comprises a first tube body, a second tube body and the balloon fixing device, wherein the first tube body is used to guide the instrument; the second tube body is sleeved on the first tube body and a gas channel is formed between the second tube body and the first tube body;

[0007] A gas interface is provided at the proximal end of the first tube body, and a balloon is provided at the distal end of the first tube body, wherein the balloon and the gas interface are connected through the gas channel; the balloon is configured to be connected to the gas injected from the gas interface and transported by the gas channel, so as to expand and expand in the patient's body;

[0008] The balloon fixing device is arranged on the second tube body and is located at a side of the balloon close to the gas interface, and is used for contacting with the patient's body surface to fix the position of the balloon in the patient's body.

[0009] In a specific embodiment, the balloon fixing device includes an elastic limiting ring, which is sleeved on the surface of the second tube body and has a preset distance between the elastic limiting ring and the balloon.

[0010] In a specific embodiment, the elastic limiting ring has a contact surface on a side close to the balloon, and the contact surface includes an arc-shaped concave surface that is recessed from the edge to the middle.

[0011] In a specific embodiment, the first tube body includes an action portion and a guide portion connected to each other, the proximal end of the second tube body is connected to the action portion, and the distal end of the second tube body extends along the extension direction of the guide portion and covers at least a portion of the guide portion;

[0012] The gas channel is formed between the action portion, the guide portion and the second tube body; the gas interface is located at the action portion and connected to the gas inlet end of the gas channel;

[0013] The balloon is located in the guide portion and connected to the gas outlet end of the gas channel.

[0014] In a specific embodiment, the outer surface of the guide portion has at least one groove portion, the groove portion extends along the length direction of the guide portion, and the groove portion is configured so that a portion is covered by the second tube body and another portion exposes the second tube body; the balloon seals the groove portion that exposes the second tube body.

[0015] In a specific embodiment, the two ends of the balloon are provided with a first sealing portion and a second sealing portion, the first sealing portion is connected to the first tube body, and the second sealing portion is connected to the second tube body;

[0016] Furthermore, colloid is provided at the connection between the first sealing member and the first tube body, and at the connection between the second sealing member and the second tube body.

[0017] In a specific embodiment, it also includes an inflation nozzle, an elastic member and a coupling member, one end of the elastic member is connected to the inner wall of the gas interface, and the other end is connected to the coupling member; the inflation nozzle is connected to the coupling member, and at least a portion of the inflation nozzle is exposed from the gas interface.

[0018] In a specific embodiment, a sealing cover plate is further included, wherein the sealing cover plate is located at the proximal end of the first tube body and is detachably connected to the first tube body.

[0019] In a specific embodiment, an inflation seat is further provided at the proximal end of the first tube body, and the inflation seat is connected to the inner cavity of the first tube body; an air valve for opening and closing the air path of the inflation seat is provided on the inflation seat.

[0020] In a specific embodiment, it further includes a puncture needle, which is detachably disposed in the inner cavity of the first tube body.

[0021] The utility model has at least the following beneficial effects:

[0022] The utility model provides a puncture device with a balloon fixing device, comprising a first tube body, a second tube body and a balloon fixing device, wherein the first tube body is used to guide the instrument; the second tube body is sleeved on the first tube body, and a gas channel is formed between the second tube body and the first tube body; a gas interface is provided at the proximal end of the first tube body, and a balloon is provided at the distal end of the first tube body, and the balloon and the gas interface are connected through the gas channel; the balloon is configured to dock with the gas injected from the gas interface and transported by the gas channel so as to expand and dilate in the patient's body; the balloon fixing device is arranged on the second tube body and is located on a side of the balloon close to the gas interface, and is used to contact with the patient's body surface so as to fix the position of the balloon in the patient's body. The utility model forms a gas channel through the cooperation between the first tube body and the second tube body, and the gas is transported from the proximal end to the distal end through the connection between the balloon, the gas channel and the gas interface, so as to realize the expansion and expansion of the balloon in the patient's body to provide a good surgical space, and the balloon fixing device arranged near the balloon can contact with the patient's body surface, limit the position of the puncture device, and prevent the puncture device from moving, so that the position of the balloon in the patient's body is fixed, the accuracy and position of the puncture can be accurately controlled, and the subsequent surgical operation of other surgical instruments is convenient, the difficulty of the surgical operation is reduced, and the efficiency of the surgical operation is improved. In addition, the puncture device of the present application has a simple structure, a reasonable design, and is safe and reliable.

[0023] Furthermore, the puncture device with a balloon fixing device of the utility model also includes a sealing cover plate, which is located at the proximal end of the first tube body and is detachably connected to the first tube body. By adopting the design of a fully separate puncture device, the sealing cover plate and the first tube body are detachably connected, and a variety of specimen removal methods can be provided, which is suitable for most surgical occasions. At the same time, the sealing cover plate can effectively prevent gas leakage, can achieve rapid deflation, and save surgical time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is an overall schematic diagram of a trocar with a balloon fixing device according to an embodiment of the utility model;

[0026] Figure 2 An exploded view of a trocar with a balloon fixing device according to an embodiment of the utility model;

[0027] Figure 3 This is an exploded view of a trocar with a balloon fixing device according to an embodiment of the utility model without a cover plate;

[0028] Figure 4 This is a schematic diagram of a first tube body of a trocar with a balloon fixing device according to an embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of a trocar with a balloon fixing device according to an embodiment of the utility model without a cover plate;

[0030] Figure 6 The puncture device with a balloon fixing device according to the embodiment of the utility model Figure 5 A-A' section view;

[0031] Figure 7 The puncture device with a balloon fixing device according to the embodiment of the utility model Figure 6 Enlarged view of part A.

[0032] Reference numerals:

[0033] 1-first tube body; 2-second tube body; 3-balloon fixing device; 4-gas channel; 5-gas interface; 6-balloon; 8-sealing cover body;

[0034] 11-acting part; 12-guiding part;

[0035] 111-annular flange; 112-clamping portion;

[0036] 13-inner cavity; 14-inflation port;

[0037] 121- groove portion;

[0038] 21- expansion part;

[0039] 31-elastic limiting ring; 311-contact surface;

[0040] 61-first sealing portion; 62-second sealing portion;

[0041] 71-inflating nozzle; 72-elastic member; 73-joining member;

[0042] 81-first cover body; 82-second cover body;

[0043] 91-inflatable seat; 92-air valve. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0045] like Figure 1 , 2 As shown in Figures 6 and 7, the utility model provides a puncture device with a balloon fixing device 3, comprising a first tube body 1, a second tube body 2 and the balloon fixing device 3, the first tube body 1 is used to guide the instrument; the second tube body 2 is sleeved on the first tube body 1, and a gas channel 4 is formed between the second tube body 2 and the first tube body 1; a gas interface 5 is provided at the proximal end of the first tube body 1, and a balloon 6 is provided at the distal end of the first tube body 1, and the balloon 6 and the gas interface 5 are connected through the gas channel 4; the balloon 6 is configured to dock with the gas injected from the gas interface 5 and transported by the gas channel 4, so as to expand and dilate in the patient's body; the balloon fixing device 3 is arranged on the second tube body 2, and is located on the side of the balloon 6 close to the gas interface 5, and is used to contact with the patient's body surface to fix the position of the balloon 6 in the patient's body. The utility model forms a gas channel 4 by the cooperation between the first tube body 1 and the second tube body 2, and the gas is transported from the proximal end to the distal end through the connection between the balloon 6 and the gas channel 4 and the gas interface 5, so as to realize the expansion and expansion of the balloon 6 in the patient's body to provide a good surgical space, and the balloon fixing device 3 arranged near the balloon 6 can contact with the patient's body surface, limit the position of the puncture device, and prevent the puncture device from moving, so that the position of the balloon in the patient's body is fixed, the accuracy and position of the puncture are accurately controlled, and the subsequent surgical operation of other surgical instruments is convenient, the difficulty of the surgical operation is reduced, and the efficiency of the surgical operation is improved. In addition, the puncture device of the present application has a simple structure, a reasonable design, and is safe and reliable.

[0046] like Figure 1 , 3 As shown, the balloon fixing device 3 includes an elastic limiting ring 31, which is sleeved on the surface of the second tube body 2 and has a preset distance with the balloon 6. In the present application, the elastic limiting ring 31 has a preset distance with the balloon 6, so that the balloon 6 is located in the patient's body and the elastic limiting ring 31 is located outside the patient's body, and the elastic limiting ring 31 contacts the patient's body surface to play a certain fixing role, thereby improving the reliability of the puncture device.

[0047] In one embodiment, the elastic limiting ring 31 is sleeved on the surface of the second tube body 2, and a colloid is provided between the elastic limiting ring 31 and the second tube body 2. By providing a colloid between the elastic limiting ring 31 and the second tube body 2, the connection between the elastic limiting ring 31 and the second tube body 2 is more firmly connected and the structure is safer and more reliable.

[0048] In another embodiment, the elastic limiting ring 31 is sleeved on the surface of the second tube body 2, and a detachable connecting structure is provided between the elastic limiting ring 31 and the second tube body 2. Through the detachable connecting structure between the elastic limiting ring 31 and the second tube body 2, the size of the elastic limiting ring 31 can be better replaced to meet the needs of different scenarios.

[0049] In other embodiments, the elastic limiting ring 31 is sleeved on the surface of the second tube body 2 , and an interference fit is formed between the elastic limiting ring 31 and the second tube body 2 .

[0050] Specifically, Figure 1 , 6 As shown, the elastic limiting ring 31 has a contact surface 311 on one side close to the balloon 6, and the contact surface 311 includes an arc-shaped concave surface that is recessed from the edge to the middle. In the present application, the contact surface 311 is set as an arc-shaped concave surface that is recessed from the edge to the middle, so that the contact surface 311 has a certain adsorption force, so that the elastic limiting ring 31 can better contact and fix on the patient's body surface, so as to improve the stability of the puncture device.

[0051] like Figure 1 , 4 As shown in Figures 6 and 7, the first tube body 1 includes an action portion 11 and a guide portion 12 connected to each other, the proximal end of the second tube body 2 is connected to the action portion 11, and the distal end of the second tube body 2 extends along the extension direction of the guide portion 12 and covers at least a portion of the guide portion 12; a gas channel 4 is formed between the action portion 11, the guide portion 12 and the second tube body 2; the gas interface 5 is located at the action portion 11 and connected to the air inlet end of the gas channel 4; the balloon 6 is located at the guide portion 12 and connected to the air outlet end of the gas channel 4.

[0052] The action part 11 and the guide part 12 can be an integrally formed tube, or two tubes of different hardness connected together. The hardness of the first tube 1 is greater than that of the second tube 2. The first tube 1 provides a certain degree of support, so that the guide part 12 of the puncture device has a certain degree of compliance; the second tube 2 is located on the outer surface of the first tube 1, providing a certain degree of elasticity, so that the pain caused by the patient can be reduced when the puncture device enters the patient's body.

[0053] In this embodiment, a colloid is provided at the connection between the second tube body 2 and the action part 11 , so as to further improve the tightness of the connection between the second tube body 2 and the action part 11 .

[0054] The second tube body 2 is a heat shrink tube, which shrinks under the action of hot air from a heat gun, so that the second tube body 2 shrinks to fit closely with at least a portion of the first tube body 1, thereby improving the sealing and reliability of the puncture device.

[0055] like Figure 1-7As shown, the outer surface of the guide portion 12 has at least one groove portion 121, and the groove portion 121 extends along the length direction of the guide portion 12. The groove portion 121 is configured to be partially covered by the second tube body 2, and the other part is exposed from the second tube body 2; the balloon 6 blocks the groove portion 121 that exposes the second tube body 2. In the present application, when the second tube body 2 is heat-shrunk to fit closely with the first tube body 1, the groove portion 121 provides a gas channel 4, so that the gas is transported along the extension direction of the guide portion 12, and the balloon 6 blocks a part of the groove portion 121 that exposes the second tube body 2 to connect with the gas in the gas channel 4, so as to be inflated to expand. The whole structure is simple, the design is reasonable, and it has a certain sealing performance.

[0056] In one embodiment, the groove portion 121 extends along the output end of the gas interface 5 to the guide portion 12 and extends along the length direction of the guide portion 12 , and a gas channel 4 is directly formed between the groove portion 121 and the second tube body 2 .

[0057] In this embodiment, if Figure 2 , 4 As shown, the action portion 11 has an annular flange 111 on one side close to the guide portion 12, and the second tube body 2 has an expansion portion 21, one end of the expansion portion 21 is connected to the annular flange 111, and the other end is connected to the guide portion 12, and a first gap is provided between the annular flange 111, the expansion portion 21 and the guide portion 12; the outer surface of the guide portion 12 has a groove portion 121, and a second gap is provided between the groove portion 121 and the second tube body 2, the first gap is connected to the second gap, and the first gap and the second gap together constitute a gas channel 4.

[0058] Among them, Figure 1 , 7 As shown, the two ends of the balloon 6 have a first sealing part 61 and a second sealing part 62 respectively, the first sealing part 61 is connected to the first tube body 1, and the second sealing part 62 is connected to the second tube body 2; and the connection between the first sealing part and the first tube body 1, and the connection between the second sealing part and the second tube body 2 are both provided with colloid. Through the connection between the first sealing part 61, the second sealing part 62 and the first tube body 1, the second tube body 2, the balloon 6 has good sealing performance, so as to facilitate the subsequent inflation of the balloon 6, and the colloid provided at the connection between the first sealing part and the first tube body 1, and the connection between the second sealing part and the second tube body 2 further improves the sealing performance of the balloon 6, making the structure safer and more reliable.

[0059] like Figure 1-7As shown, the puncture device with the balloon fixing device 3 also includes an inflation nozzle 71, an elastic member 72 and a coupling member 73, one end of the elastic member 72 is connected to the inner wall of the gas interface 5, and the other end is connected to the coupling member 73; the inflation nozzle 71 is connected to the coupling member 73, and at least a part of the inflation nozzle 71 is exposed from the gas interface 5. The present application makes the connection between the gas interface 5 and the external air pump and other equipment have a certain airtightness through the coordination between the inflation nozzle 71, the elastic member 72 and the coupling member 73, so as to improve the gas injection efficiency.

[0060] like Figure 1-7 As shown, the puncture device with the balloon fixing device 3 also includes a sealing cover plate, which is located at the proximal end of the first tube body 1 and is detachably connected to the first tube body 1.

[0061] Specifically, the sealing cover plate includes a first cover body 81 for sealing when an instrument is used and a second cover body 82 for sealing when no instrument is used. The first cover body 81 and the second cover body 82 are both located at the proximal end of the first tube body 1; the proximal end of the first tube body 1 has a clamping portion 112, and the first cover body 81, the second cover body 82 and the clamping portion 112 are detachably connected in sequence. The present application realizes the detachable connection between the sealing cover plate and the first tube body 1 through a fully separated puncture device, and can provide a variety of specimen removal methods, which is suitable for most surgical occasions. Therefore, a variety of types of sealing structures are provided to meet the needs of different surgical occasions. At the same time, the multiple sealing structures provided by the first cover body 81 and the second cover body 82 can effectively prevent gas leakage, can achieve rapid deflation, and save surgical time. In addition, the first cover body 81 and the second cover body 82 can also play a certain role in fixing instruments such as puncture needles, making the puncture device structure more stable.

[0062] like Figure 1-7 As shown, the proximal end of the first tube body 1 is further provided with an inflatable seat 91, which is connected to the inner cavity 13 of the first tube body 1 through the inflatable port 14 of the first tube body 1; the inflatable seat 91 is provided with an air valve 92 for opening and closing the air path of the inflatable seat 91. The inflatable seat 91 is connected to the first tube body 1 by a buckle, and there is a colloid at the connection between the inflatable seat 91 and the first tube body 1.

[0063] The inflatable seat 91 in the prior art generally uses UV glue to complete the purpose of curing and sealing. The disadvantage of the bonding process is that the connection strength is not high and it is easy to fail due to aging. In order to solve this problem, the present application first fixes the inflatable seat 91 to the first tube body 1 through a snap, and then uses UV glue sealing to separate the curing and sealing of the inflatable seat 91. Compared with the single bonding form, the fixing strength of the inflatable seat 91 can be increased to prevent leakage caused by external force damage such as collision.

[0064] The puncture device with the balloon fixing device 3 also includes a puncture needle, which is detachably arranged in the inner cavity 13 of the first tube body 1. The present application uses a detachable connection between the puncture needle and the first tube body 1, so that the puncture needle or other instruments can be better replaced during use of the puncture device, which has a certain flexibility.

[0065] Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present utility model.

[0066] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0067] The above serial numbers of the utility model are for description only and do not represent the advantages or disadvantages of the implementation scenarios.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A trocar with a balloon fixing device, characterized in that: It comprises a first tube body, a second tube body and a balloon fixing device, wherein the first tube body is used to guide the instrument; the second tube body is sleeved on the first tube body and a gas channel is formed between the second tube body and the first tube body; A gas interface is provided at the proximal end of the first tube body, and a balloon is provided at the distal end of the first tube body, wherein the balloon and the gas interface are connected through the gas channel; the balloon is configured to be connected to the gas injected from the gas interface and transported by the gas channel, so as to expand and expand in the patient's body; The balloon fixing device is arranged on the second tube body and is located at a side of the balloon close to the gas interface, and is used for contacting with the patient's body surface to fix the position of the balloon in the patient's body.

2. The trocar with a balloon fixing device according to claim 1, characterized in that: The balloon fixing device comprises an elastic limiting ring, which is sleeved on the surface of the second tube body and has a preset distance from the balloon.

3. The trocar with a balloon fixing device according to claim 2, characterized in that: The elastic limiting ring has a contact surface on one side close to the balloon, and the contact surface comprises an arc-shaped concave surface that is recessed from the edge to the middle.

4. The trocar with a balloon fixing device according to claim 1, characterized in that: The first tube body comprises an action portion and a guide portion connected to each other, the proximal end of the second tube body is connected to the action portion, and the distal end of the second tube body extends along an extension direction of the guide portion and covers at least a portion of the guide portion; The gas channel is formed between the action portion, the guide portion and the second tube body; the gas interface is located at the action portion and connected to the gas inlet end of the gas channel; The balloon is located in the guide portion and connected to the gas outlet end of the gas channel.

5. The trocar with a balloon fixing device according to claim 4, characterized in that: The outer surface of the guide portion has at least one groove portion, which extends along the length direction of the guide portion. The groove portion is configured so that a portion is covered by the second tube body and another portion is exposed from the second tube body; the balloon seals the groove portion that exposes the second tube body.

6. The trocar with a balloon fixing device according to claim 4, characterized in that: The two ends of the balloon are respectively provided with a first sealing portion and a second sealing portion, the first sealing portion is connected to the first tube body, and the second sealing portion is connected to the second tube body; Furthermore, colloid is disposed at the connection between the first sealing part and the first tube body, and at the connection between the second sealing part and the second tube body.

7. The trocar with a balloon fixing device according to claim 1, characterized in that: It also includes an inflation nozzle, an elastic member and a coupling member, one end of the elastic member is connected to the inner wall of the gas interface, and the other end is connected to the coupling member; the inflation nozzle is connected to the coupling member, and at least a portion of the inflation nozzle is exposed from the gas interface.

8. The trocar with a balloon fixing device according to claim 1, characterized in that: It also includes a sealing cover plate, which is located at the proximal end of the first tube body and is detachably connected to the first tube body.

9. The trocar with a balloon fixing device according to claim 1, characterized in that: An inflatable seat is also provided at the proximal end of the first tube body, and the inflatable seat is connected to the inner cavity of the first tube body; an air valve for opening and closing the air path of the inflatable seat is provided on the inflatable seat.

10. The trocar with a balloon fixing device according to claim 1, characterized in that: It also includes a puncture needle, which is detachably arranged in the inner cavity of the first tube body.

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