Novel balloon puncture sheath

Abstract

The utility model relates to a novel balloon puncture sheath which comprises a puncture sheath body and a balloon structure, and a puncture sheath tube is arranged on the lower portion of the puncture sheath body. A balloon structure is arranged on the periphery of the puncture sheath tube and comprises an annular balloon, an upper connecting tube section and a lower connecting tube section. The upper connecting tube section and the lower connecting tube section are sleeved and adhered to the periphery of the puncture sheath tube; a connecting channel extending up and down is arranged on the tube wall of the puncture sheath tube, the top end of the connecting channel is communicated with a balloon air injection opening formed in the top end of the puncture sheath tube, and the bottom end of the connecting channel is communicated with the cavity. Due to the design of the upper connecting pipe section and the lower connecting pipe section, the bonding area of the balloon structure and the puncture sheath pipe is reduced, and the product reject ratio caused by the bonding problem is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a novel balloon puncture sheath. Background Art

[0002] The balloon puncture devices currently on the market are blow-molded to form a balloon with a long tube, which is then placed around the outer periphery of a puncture sheath and fixed to the puncture sheath by bonding. Compared to traditional puncture devices, this structure has an additional air inlet designed on the puncture sheath to ventilate the balloon, and the outer wall of the puncture sheath is required to have several air guide grooves extending forward and backward. The air guide grooves are connected to the air inlet and the balloon, and the balloon is filled and deflated through the air guide grooves.

[0003] The defects of the existing structure are:

[0004] ① Due to the influence of the air injection port, the top of the puncture sheath tube causes the area of ​​the balloon tube corresponding to the area to be irregular in shape, which can easily cause incomplete bonding and lead to air leakage.

[0005] ② When gluing the long tube of the balloon, the glue is easily squeezed into the air guide groove of the puncture sheath, causing the air guide groove to be blocked and the balloon cannot be inflated or deflated; in addition, there is too little glue and the sheath body is not firmly bonded.

[0006] ③Because the long tube of the balloon needs to be bonded, the sheath needs to be evenly coated with glue. If the glue is uneven, it will cause marks on the surface, affecting the appearance of the product.

[0007] ④ The balloon sticks to the long tube, resulting in a thicker wall in the area where the balloon sticks, which will form a bulge and is not conducive to puncture.

[0008] ⑤ Due to the complexity of the process, the production defect rate remains high and the cost increases. Utility Model Content

[0009] The purpose of the utility model is to provide a novel balloon puncture sheath, which can effectively solve the problem of bulging and ventilation influence after the puncture sheath tube is connected to the balloon structure.

[0010] The utility model is realized by the following technical solutions: a novel balloon puncture sheath, which comprises a puncture sheath body and a balloon structure, wherein a puncture sheath tube is provided at the lower part of the puncture sheath body;

[0011] The outer periphery of the puncture sheath is provided with a balloon structure, which includes a donut-shaped balloon, an upper connecting tube section connected to the upper edge of the inner ring of the donut-shaped balloon, and a lower connecting tube section connected to the lower edge of the inner ring of the donut-shaped balloon;

[0012] The upper connecting tube section and the lower connecting tube section are both sleeved and bonded to the outer periphery of the puncture sheath;

[0013] The cross section of the donut-shaped balloon is C-shaped, and the donut-shaped balloon and the side wall of the puncture sheath together form a chamber for containing gas;

[0014] The tube wall of the puncture sheath is provided with a connecting channel extending up and down, the top of the connecting channel is communicated with the balloon air injection port provided at the top of the puncture sheath, and the bottom of the connecting channel is communicated with the chamber.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The design of the upper connecting tube section and the lower connecting tube section reduces the bonding area between the balloon structure and the puncture sheath, reducing the product defect rate caused by bonding problems.

[0017] 2. The design of the upper annular bonding groove and the lower annular bonding groove can not only make the connection of the annular balloon more secure, but also prevent the upper connecting tube segment and the lower connecting tube segment from protruding from the puncture sheath tube, prevent the non-balloon position from bulging, and thus avoid the puncture sheath tube wall being too thick to affect the operation.

[0018] 3. The design of the connecting channel connecting the gas injection port and the balloon can effectively avoid the problem in existing products that the long tube of the balloon is easy to squeeze the glue into the gas guide groove of the puncture sheath when bonding glue, avoiding the adverse effects of gas blockage and thus reducing the production defect rate.

[0019] 4. Compared with the existing balloon puncture device, the present invention has a simpler process and a lower production defect rate, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the puncture sheath;

[0022] Figure 3 Schematic diagram of the balloon structure;

[0023] Figure 4 is a cross-sectional view of the balloon structure;

[0024] Figure 5 This is a structural diagram of the connecting channel embodiment 1;

[0025] Figure 6 This is a structural diagram of connecting channel embodiment 2;

[0026] Figure 7 This is a structural diagram of connecting channel embodiment 3.

[0027] Explanation of reference numerals: 1 puncture sheath body, 11 puncture sheath tube, 111 upper annular bonding groove, 112 lower annular bonding groove, 12 connecting channel, 13 fixing ring, 2 balloon structure, 21 donut-shaped balloon, 22 upper connecting tube segment, 23 lower connecting tube segment, 3 airway tube, 14 balloon insufflation port. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings, but the protection content of the present invention is not limited to the following:

[0029] like Figures 1 to 7 As shown, a novel balloon puncture sheath comprises a puncture sheath body 1 and a balloon structure 2. A puncture sheath tube 11 is provided at the lower portion of the puncture sheath body 1;

[0030] The outer periphery of the puncture sheath tube 11 is provided with a balloon structure 2, which includes a donut-shaped balloon 21, an upper connecting tube section 22 connected to the upper edge of the inner ring of the donut-shaped balloon 21, and a lower connecting tube section 23 connected to the lower edge of the inner ring of the donut-shaped balloon 21;

[0031] The upper connecting tube section 22 and the lower connecting tube section 23 are both sleeved and bonded to the outer periphery of the puncture sheath tube 11;

[0032] The cross section of the annular balloon 21 is C-shaped, and the annular balloon 21 and the side wall of the puncture sheath tube 11 together form a chamber for containing gas;

[0033] The wall of the puncture sheath tube 11 is provided with a connecting channel 12 extending up and down, the top of the connecting channel 12 is connected to the balloon injection port 14 provided at the top of the puncture sheath tube 11, and the bottom of the connecting channel 12 is connected to the chamber.

[0034] In order to avoid the thickening of the connection area between the upper connecting tube section 22 and the lower connecting tube section 23 and the puncture sheath tube 11, the outer wall surface of the puncture sheath tube 11 is provided with a discontinuous upper annular bonding groove 111 and a lower annular bonding groove 112 from top to bottom; the upper connecting tube section 22 is sleeved and bonded to the outer periphery of the upper annular bonding groove 111, and the lower connecting tube section 23 is sleeved and bonded to the outer periphery of the lower annular bonding groove 112;

[0035] The annular balloon 21 is coated on the outer periphery of the area between the upper annular bonding groove 111 and the lower annular bonding groove 112 .

[0036] The design of the upper annular bonding groove 111 and the lower annular bonding groove 112 can not only make the annular balloon 21 more securely connected, but also prevent the upper connecting tube section 22 and the lower connecting tube section 23 from protruding from the puncture sheath tube 11, thereby avoiding the puncture sheath tube wall being too thick and affecting the operation.

[0037] During use, the puncture sheath tube 11 is inserted into the human body, and then gas is injected from the balloon gas injection port 14 to allow gas to enter the cavity and expand the annular balloon 21.

[0038] Example 1:

[0039] like Figure 5 As shown, the connecting channel 12 includes an outer groove provided on the outer wall of the puncture sheath 11, the outer groove extends in the up-down direction and an airway tube 3 is embedded in the outer groove. It should be noted that the airway tube 3 is bonded to the outer groove by glue.

[0040] Example 2:

[0041] like Figure 6 As shown, the connecting channel 12 is an air guide channel provided in the wall of the puncture sheath tube 11, and the air guide channel penetrates the wall of the puncture sheath tube 11 in the up and down direction.

[0042] Example 3:

[0043] like Figure 7 As shown, the connecting channel 12 includes an inner groove provided on the inner wall of the puncture sheath 11, the inner groove extends in the up-down direction and the inner groove is embedded with the airway tube 3. It should be noted that the airway tube 3 is bonded to the inner groove by glue.

[0044] The above three embodiments of the connecting channel 12 can all be designed to connect the air injection port and the balloon through the connecting channel, which effectively avoids the problem in existing products that the long tube of the balloon is easy to squeeze the glue into the air guide groove of the puncture sheath when bonding glue, avoids the adverse effects of air blockage, and thus reduces the production defect rate.

[0045] Furthermore, a fixing ring 13 is provided on the puncture sheath tube 11. The fixing ring 13 is clamped on the tissue surface and is used to limit the puncture depth of the puncture sheath tube 11.

[0046] Although the present invention is illustrated and described using specific embodiments and their alternatives, it should be understood that various changes and modifications can be implemented without departing from the spirit and scope of the present invention. Therefore, it should be understood that the present invention is not limited in any sense except by the appended claims and their equivalents.

Claims

1. A novel balloon puncture sheath, characterized by: It comprises a puncture sheath body (1) and a balloon structure (2), wherein a puncture sheath tube (11) is provided at the lower portion of the puncture sheath body (1); The outer periphery of the puncture sheath tube (11) is provided with a balloon structure (2), the balloon structure (2) comprising a circular balloon (21), an upper connecting tube section (22) connected to the upper edge of the inner ring of the circular balloon (21), and a lower connecting tube section (23) connected to the lower edge of the inner ring of the circular balloon (21); The upper connecting tube section (22) and the lower connecting tube section (23) are both sleeved and bonded to the outer periphery of the puncture sheath tube (11); The cross section of the annular balloon (21) is C-shaped, and the annular balloon (21) and the side wall of the puncture sheath tube (11) together form a chamber for accommodating gas; The wall of the puncture sheath tube (11) is provided with a connecting channel (12) extending up and down, the top end of the connecting channel (12) is communicated with a balloon air injection port (14) provided at the top end of the puncture sheath tube (11), and the bottom end of the connecting channel (12) is communicated with the chamber.

2. A novel balloon puncture sheath according to claim 1, characterized in that: The outer wall surface of the puncture sheath tube (11) is provided with a discontinuous upper annular bonding groove (111) and a lower annular bonding groove (112) from top to bottom; the upper connecting pipe section (22) is sleeved and bonded to the outer periphery of the upper annular bonding groove (111), and the lower connecting pipe section (23) is sleeved and bonded to the outer periphery of the lower annular bonding groove (112); The annular balloon (21) is coated on the outer periphery of the area between the upper annular bonding groove (111) and the lower annular bonding groove (112).

3. The novel balloon puncture sheath according to claim 1, characterized in that: The connecting channel (12) comprises an outer groove provided on the outer tube wall of the puncture sheath tube (11), the outer groove extending in the up-down direction and an airway tube (3) embedded in the outer groove.

4. The novel balloon puncture sheath according to claim 1, characterized in that: The connecting channel (12) is an air guide channel provided in the wall of the puncture sheath tube (11), and the air guide channel penetrates the wall of the puncture sheath tube (11) in the up-down direction.

5. The novel balloon puncture sheath according to claim 1, characterized in that: The connecting channel (12) comprises an inner groove provided on the inner tube wall of the puncture sheath tube (11), the inner groove extending in the up-down direction and an airway tube (3) embedded in the inner groove.

6. A novel balloon puncture sheath according to any one of claims 1 to 5, characterized in that: A fixing ring (13) is also provided on the puncture sheath tube (11).

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