Balloon puncture sleeve and balloon puncture device

Abstract

The utility model discloses a kind of balloon puncture sleeve and including its balloon puncture device. The balloon puncture sleeve includes: main body, inflator and balloon tube, the main body includes seat body, along the axis of seat body and with seat body integrally formed shaft tube, valve pipe and air inlet pipe;The inflator includes the shaft ring anchored in the outer side of the shaft tube and the inflation pipe extended from the shaft ring;The balloon tube is fixed in the outer side of the shaft tube below the inflator, the balloon of the balloon tube is inflated by the inflation pipe;Vertical groove parallel with the axis of the shaft tube is equipped on the inflator, and transverse opening is communicated with the bottom end of the vertical groove, the outer side of the shaft tube is equipped with lug, and the lug can be clamped in the opening. The design and assembly of the balloon puncture sleeve of the utility model are simple, adjustable clamping position, firmly fixed.

Description

Technical Field

[0001] This utility model belongs to the field of minimally invasive medical devices, and in particular relates to a balloon puncture cannula and a balloon puncture device. Background Technology

[0002] In minimally invasive surgery, when surgical instruments are inserted into the patient's body / body cavity, a trocar is needed as a channel to facilitate their passage. During the procedure, the trocar needs to maintain a stable position to ensure the accuracy and safety of the operation, which requires a balloon and a positioning device. After the trocar is inserted into the body, the balloon can inflate and fit tightly against the surrounding tissue. Combined with the positioning device, this effectively prevents the trocar from shifting or slipping within the body, providing a stable operating platform for the surgery.

[0003] Currently, the setup of balloon puncture cannulas and puncture devices suffers from problems such as complex manufacturing processes and insecure fixation. Utility Model Content

[0004] This invention addresses the aforementioned problems by providing a balloon puncture cannula and balloon puncture device that are simple in design, have a reasonable structure, and are not easily dislodged.

[0005] In one aspect, this utility model provides a balloon puncture cannula, including a main body, an inflatable component, and a balloon tube. The main body includes a seat, a shaft tube extending along the axis of the seat and integrally formed from the same material as the seat, a valve tube, and an air inlet tube. The inflatable component includes a collar anchored to the outside of the shaft tube and an inflatable tube extending from the collar. The shaft tube is fixed below the inflatable component. The balloon tube's balloon is inflated through the inflatable tube. The inflatable component has a vertical groove parallel to the axis of the shaft tube and a transverse opening communicating with the bottom end of the vertical groove. A protrusion is provided on the outside of the shaft tube, which can be engaged in the opening.

[0006] In another aspect, this utility model embodiment provides a balloon puncture device, including the balloon puncture cannula described above.

[0007] The advantages of this utility model embodiment are:

[0008] 1. The seat, shaft tube, valve tube, and air inlet tube are formed from the same material in one piece, which can reduce the assembly process and avoid air leakage caused by improper assembly;

[0009] 2. The balloon and flexible tube are made into one piece, which is then fitted onto the main body and the inflation groove on the main body is sealed to form a gas channel, reducing the process of adding air tubes;

[0010] 3. The limiter can cooperate with the flexible cannula and balloon on the outside of the shaft tube for positioning, fixing the trocar cannula / trocar to the cavity wall and preventing it from sliding freely;

[0011] 4. The design structure of the inflatable component allows it to be firmly and sealed to the shaft tube, and the balloon can be inflated through the one-way air valve inside the inflatable tube. One end of the flexible tube of the balloon sleeve can be sealed to the inflatable component. Attached Figure Description

[0012] Figure 1 A schematic diagram of a balloon puncture cannula provided in an embodiment of this utility model is shown;

[0013] Figure 2 Showing Figure 1 An exploded view of the main components of a balloon puncture cannula;

[0014] Figure 3 Showing Figure 1 A schematic diagram of the main structure of the balloon puncture cannula;

[0015] Figure 4 (a) and (b) show Figure 1 Schematic diagram of the inflation component of the balloon puncture cannula at different angles;

[0016] Figure 5 Showing Figure 1 A schematic diagram of the balloon cannula used in balloon puncture cannula testing;

[0017] Figure 6 The present invention demonstrates the puncture needle and balloon puncture cannula that constitute a puncture device according to an embodiment of the present invention. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The term "near" or "far" is defined as follows: the side closer to the medical personnel is near, and the side farther from the medical personnel is far; the side closer to the patient is far.

[0021] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0022] One embodiment of this utility model provides a balloon puncture cannula, such as... Figures 1-5 The balloon puncture cannula, as shown, includes a body 10, an inflator 20 fitted onto the body 10, and a balloon tube 30. The body 10 includes a seat 11, a shaft tube 12 extending along the axis of the seat 11 and integrally formed from the same material as the seat 11, a valve tube 13, and an air inlet tube 14, wherein the valve tube 13 and the air inlet tube 14 are both located on the seat 11, and the shaft tube 12 is located below the seat 11. The inflator 20 includes a collar 21 anchored to the outside of the shaft tube 12 and an inflation tube 22 extending from the collar 21. The balloon tube 30 is fixed below the inflator 20 and outside the shaft tube 12, and the balloon 31 of the balloon tube 30 is inflated through a one-way valve 50 in the inflation tube 14.

[0023] The collar 21 of the inflatable component 20 has a vertical groove 213 parallel to the axis of the shaft tube 12 and a transverse opening 214 communicating with the bottom end of the vertical groove 213. A protrusion 121 is provided on the outer side of the shaft tube 12, which can engage in the opening 214. The inflatable component 20 is anchored to the sleeve 12 through the following process: the protrusion 121 first passes through the vertical groove 213 to the bottom of the groove, and then the protrusion 121 is rotated towards the transverse opening until it enters the transverse opening 214 and is engaged.

[0024] The inflatable component 20 can also be anchored to the shaft tube 12 in other ways, such as by clips, threads, or tenons.

[0025] After the inflatable component 20 is anchored to the shaft tube 12, it needs to be further secured and sealed to the shaft tube 12. Further securing or sealing can be achieved by bonding or laser welding the gap between the inflatable component 20 and the shaft tube 12.

[0026] The number of protrusions 121 can be multiple, for example, at least two. The multiple protrusions 121 can be distributed symmetrically or asymmetrically on the outer side of the shaft tube 12. Preferably, the multiple protrusions 121 are symmetrically distributed on the outer side of the shaft tube 12. The inflatable member 20 also has vertical grooves 213 and openings 214 corresponding to the number and position of the protrusions 121. In some cases, the number of protrusions 121 can be only one, and the corresponding number and position of the vertical grooves and openings can also be [not specified].

[0027] The shaft tube 12 includes an inflation groove 122 parallel to the axis of the sleeve 12. One of the protrusions 121 is located directly above the inflation groove 122, that is, from a certain angle, the centerline of the protrusion 121 and the centerline of the inflation groove 122 are on the same straight line. The inflation groove 122 is connected to the inflation tube 22. A one-way valve 50 is installed in the inflation tube 22 of the inflation component 20. By pulling the injection head of the syringe, gas can be injected into or withdrawn from the balloon 31 of the balloon tube 30 through the one-way valve 50, thereby controlling the state of the balloon before and after entering the human body. The one-way valve 50 can prevent gas backflow, further improving the inflation efficiency of the balloon. The one-way valve 50 includes a valve core and a spring, the arrangement of which is conventional technology in the art and will not be described in detail here.

[0028] The inflatable component 20 has a collar 21 comprising a thicker upper collar 211 and a thinner lower collar 212. The upper collar 211 is mounted below the base 11. An inflation tube 22 is integrally formed on the upper collar 211. The upper collar 211 also has a vertical groove 213 and an opening 214 corresponding to the protrusion 121 of the tube 12. The upper end (i.e., the mounting portion) of the balloon tube 30 is fixed to the outside of the lower collar 212. The upper collar 211 and the lower collar 212 are integrally formed from the same material. The inflatable component 20 can be made of a rigid material or a soft material. Soft materials include, for example, silicone, TPU, etc. Preferably, the inflatable component is made of the same rigid material as the main body.

[0029] In one embodiment, the inflation groove 122 is provided with a continuous axial protrusion 123, such as... Figure 3As shown. In another embodiment, the inflation groove 122 is provided with a plurality of dot-shaped or strip-shaped discontinuous axial protrusions 124 (not shown). The balloon tube 30 closes the opening of the inflation groove 122, including a continuous axial protrusion 123 in the opening, or a plurality of dot-shaped or strip-shaped discontinuous axial protrusions 124. The balloon tube 30 and the inflation groove 122 can form a gas channel, thereby connecting the inflation tube and the balloon. The presence of the axial protrusions makes the airway less likely to be blocked and forms multiple airways, because the collapse of the balloon tube 30 or the inflation groove 122 being too shallow will have an adverse effect on the airway.

[0030] The balloon tube 30 includes an annular balloon 31 with a lower portion, flexible tubes 34 connected to both sides of the balloon 31, and a mounting portion 35 extending from one end of the flexible tubes 34. The mounting portion 35 can be sealed and fixed to the lower collar 212 of the inflatable component 20. The sealing method includes heat pressing, tight fitting, adhesion, or laser welding. The balloon 31, flexible tubes 34, and mounting portion 35 of the balloon tube 30 are integrally formed from the same material. The flexible tubes 34 are tightly fitted to the rigid shaft tube 12; or, the flexible tubes 34 are circumferentially inward and circumferentially outward connected to the rigid shaft tube 12 by adhesive bonding.

[0031] In one embodiment, the shaft tube includes two annular grooves 124 (not shown) arranged on each side of the balloon 31 at the lower part of the shaft tube. The annular grooves 124 may be incomplete annular and mainly serve as markers to facilitate the confirmation of the position of the flexible tube 34 at the two ends of the balloon 31.

[0032] In one embodiment, the shaft tube includes two annular grooves 124 arranged on one side of the balloon 31 at the lower part of the shaft tube, such as... Figure 3 As shown, an adhesive is applied between the two annular grooves 124 to adhere and seal the flexible tube at one end of the balloon 31, such as the flexible tube at the proximal end 32 of the balloon 31.

[0033] In one embodiment, the shaft tube 12 includes an annular wide groove 125 disposed near the end of the shaft tube 12. An adhesive is applied to the annular wide groove 125 to adhere and seal the flexible tube at one end of the balloon 31, such as the flexible tube at the distal end 33 of the balloon 31. Combined with the description in the preceding paragraphs, it is possible to seal the flexible tubes 34 at both ends of the balloon 31 onto the shaft tube.

[0034] In addition, the seat 11 is provided with two symmetrically distributed handles 111 on both sides of the seat, which makes it convenient for the user to hold the balloon puncture cannula or balloon puncture device with their hands.

[0035] The balloon cannula of the balloon puncture cannula is equipped with a limiting device 40 on its outer side, which is typically circular. This limiting device 40 can move towards or away from the balloon on the outer side of the balloon cannula 30, and its circumferentially inward side is tightly fitted against the circumferentially outward side of the flexible tube 34. Typically, a certain space is left between the limiting device 40 and the balloon 31 of the balloon cannula 30, allowing it to directly contact and be secured to the abdominal wall. The limiting device 40 is made of an elastic material, such as silicone, so that it will not cause discomfort to the patient when in contact with the outer wall of the abdominal cavity.

[0036] The balloon 31 and the limiter 40 clamp the side wall of the human body cavity from the inside and outside of the human body, respectively. Therefore, the balloon puncture cannula is firmly fixed after being inserted into the human body and is not easy to fall off.

[0037] Another aspect of the embodiments of this utility model provides a balloon puncture device, such as... Figure 6 The device on display includes the aforementioned balloon puncture cannula and the puncture needle inserted into the balloon puncture cannula.

[0038] The puncture process of this balloon puncture device is as follows: First, the unfilled balloon 31 is inserted into the outer layer of the body and further into the body cavity through the incision site along with the puncture rod; Second, the one-way valve 50 is opened to inflate the balloon 31, and the inflated balloon 31 is positioned below the incision in the body cavity; Third, by sliding the restrictor 40 on the outer side of the body, the restrictor 40 is pressed against the patient's skin, and the friction between the restrictor 40 and the flexible tube 34 on the outer side of the shaft tube 12 locks the restrictor 40 onto the cannula. With the cooperation of the balloon 31 and the restrictor 40, the balloon puncture device is securely fixed to the patient's body, reducing the possibility of slippage. At the same time, the balloon 31 can effectively seal the incision on the patient's body, preventing air leakage, making it convenient for medical staff to use the balloon puncture device, and improving the reliability of the balloon puncture device.

[0039] After the balloon puncture cannula is fixed in place, and carbon dioxide gas is injected into the abdomen through the air inlet tube 14 on the balloon puncture cannula using a carbon dioxide pneumoperitoneum machine, the puncture needle can be removed from the balloon puncture cannula while maintaining pneumoperitoneum, and a thin surgical instrument can be inserted into the abdominal cavity through the channel established by the balloon puncture cannula to perform surgery.

[0040] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A balloon puncture cannula, characterized in that, include: The main body includes a base, a shaft tube, a valve tube, and an air intake tube that are integrally formed from the same material as the base, extending along the axis of the base; An inflatable component, comprising a collar anchored to the outside of the shaft tube and an inflatable tube extending from the collar; A balloon tube is fixed to the outside of the shaft tube below the inflatable component, and the balloon of the balloon tube is inflated through the inflatable tube; The inflatable component has a vertical groove parallel to the axis of the shaft tube and a transverse opening connected to the bottom end of the vertical groove. A protrusion is provided on the outside of the shaft tube, and the protrusion can be engaged in the opening.

2. The balloon puncture cannula according to claim 1, characterized in that, The anchoring method for the inflatable component further includes: bonding or laser welding.

3. The balloon puncture cannula according to claim 1 or 2, characterized in that, The number of protrusions is at least two and they are symmetrically distributed on the outside of the shaft tube. The inflatable component is also provided with vertical grooves and openings that correspond to the number and position of the protrusions.

4. The balloon puncture cannula according to claim 3, characterized in that, The shaft tube includes an inflation groove parallel to the axis of the sleeve, one of the protrusions is disposed directly above the inflation groove, and the inflation groove is connected to the inflation tube.

5. The balloon puncture cannula according to any one of claims 1-4, characterized in that, The collar includes a thicker upper collar and a thinner lower collar, with the upper end of the balloon tube fixed to the outside of the lower collar.

6. The balloon puncture cannula according to any one of claims 1-4, characterized in that, The balloon tube includes an annular balloon with a lower part, a flexible tube connected to both sides of the balloon, and a mounting part extending from one end of the flexible tube. The balloon, the flexible tube, and the mounting part are integrally formed from the same material.

7. The balloon puncture cannula according to claim 4, characterized in that, The inflation groove is provided with a continuous axial protrusion or multiple point-like or strip-like discontinuous axial protrusions.

8. The balloon puncture cannula according to claim 4 or 7, characterized in that, The shaft tube includes two annular grooves located near the end of the inflation groove, and an adhesive applied between the two annular grooves adheres to and seals one end of the balloon.

9. The balloon puncture cannula according to any one of claims 1-4, characterized in that, A limiter is also provided on the outer side of the shaft tube, and the axial inner side of the limiter is closely attached to the axial outer side of the flexible tube of the balloon.

10. A balloon puncture device, comprising a balloon puncture cannula as described in any one of claims 1-9.

Images