Disposable sterile ureter guiding sheath

Abstract

The utility model discloses a disposable sterile ureter guiding sheath, and relates to the field of urinary intervention surgical instruments. The disposable sterile ureter guiding sheath comprises a sheath tube, a conical expansion tube and a sheath base, and the conical expansion tube and the sheath base are communicated with the two ends of the sheath tube respectively. According to the utility model, the polymer microporous membrane bag is arranged on the outer wall of the conical expansion tube, so that when a medical worker holds the sheath base by hand and penetrates the sheath tube into the urethra of a patient through the conical expansion tube, the polymer microporous membrane bag is extruded by the urethra; then, the human body lubricating liquid stored in the macromolecule microporous membrane bag seeps out through micropores of the macromolecule microporous membrane bag under the action of pressure, so that the human body lubricating liquid is smeared on the urethra wall and lubricates the urethra wall, and the situation that after the sheathing canal is inserted into the urethra, the sheathing canal rubs against the inner wall of the urethra, and consequently the inner mucosa on the inner wall of the urethra is damaged is avoided; the injury to a patient is caused, and the injury to mucous membranes in the operation process is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of urinary interventional surgical instruments, and in particular relates to a disposable sterile ureteral guide sheath. Background Art

[0002] The disposable sterile ureteral guide sheath is a medical device used in urological surgery to establish a channel for endoscopes and other instruments to enter the urinary tract. It adopts a disposable design to ensure sterility and safety during use, reduce the possibility of infection, and simplify subsequent cleaning and disinfection work, reducing the burden on medical institutions.

[0003] However, in actual applications, the existing disposable sterile ureteral guide sheaths are generally made of hard plastic or stainless steel tubes to ensure the stability of the channel. Since the surface of the sheath is not smooth enough, when the sheath is inserted into the urethra, the inner wall of the urethra may be damaged by friction with the outer wall of the sheath, causing harm to the patient. In view of this, the present utility model is specially proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a disposable sterile ureteral guide sheath which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a disposable sterile ureteral guide sheath, comprising: a sheath tube, a conical dilation tube and a sheath seat, the conical dilation tube and the sheath seat are respectively connected to the two ends of the sheath tube; an external tube is fixedly connected to one side of the sheath seat and connected to the channel inside the sheath seat; a polymer microporous membrane capsule filled with human lubricating fluid is fixedly connected to the outer wall of the conical dilation tube.

[0006] In order to prevent the guide sheath from being deformed by the urethra, the sheath tube and the conical dilation tube are further made of hard tubes.

[0007] In order to facilitate the sheath tube to undergo a certain deformation under the squeezing of the urethra, thereby improving the flexibility of the guide sheath, further, a medical-grade rubber soft sleeve is fixedly connected to the outer wall of the sheath tube.

[0008] In order to prevent the human lubricating fluid stored in the polymer microporous membrane capsule from leaking out due to squeezing during transportation or storage, the outer side of the polymer microporous membrane capsule is further provided with a protective sleeve, and a friction layer is provided on the inner side wall where the protective sleeve and the rubber soft sleeve are in contact.

[0009] In order to facilitate the replacement of the position of the external tube, the sheath seat and the sheath tube are further rotatably connected.

[0010] In order to better hold the sheath seat, further, the surface of the sheath seat is designed to be in an inner arc shape.

[0011] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model arranges a polymer microporous membrane capsule on the outer wall of the conical expansion tube. When the medical staff holds the sheath seat and inserts the sheath into the patient's urethra through the conical expansion tube, the polymer microporous membrane capsule will be squeezed by the urethra, and then the human body lubricating fluid stored in the polymer microporous membrane capsule will seep out through the micropores of the polymer microporous membrane capsule under the action of pressure, and then be smeared on the urethral wall to lubricate the urethral wall, so as to avoid damage to the inner mucosa on the inner wall of the urethra due to friction with the inner wall of the urethra after the sheath is inserted into the urethra, causing harm to the patient, and effectively reducing the damage to the mucosa during surgery.

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached picture:

[0014] Figure 1 This is a schematic diagram of the structure of a disposable sterile ureteral guide sheath proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the unfolded structure of the disposable sterile ureteral guide sheath proposed by the utility model;

[0016] Figure 3 The utility model provides a schematic cross-sectional structural diagram of a conical expansion tube and a polymer microporous membrane capsule in a disposable sterile ureteral guide sheath.

[0017] In the figure: 1, sheath tube; 101, rubber soft sleeve; 2, sheath seat; 201, external tube; 3, conical expansion tube; 301, polymer microporous membrane capsule; 302, protective sleeve. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0019] Embodiment 1:

[0020] Reference Figure 1-Figure 3The disposable sterile ureteral guide sheath comprises: a sheath tube 1, a conical dilation tube 3 and a sheath seat 2, wherein the conical dilation tube 3 and the sheath seat 2 are respectively connected to the two ends of the sheath tube 1; an external tube 201 is fixedly connected to one side of the sheath seat 2 and is connected to the channel inside the sheath seat 2; a polymer microporous membrane capsule 301 filled with human lubricating fluid is fixedly connected to the outer wall of the conical dilation tube 3.

[0021] In urological surgery, when it is necessary to establish a channel for an endoscope and other instruments to enter the urinary tract, the medical staff first takes out the disposable sterile ureteral guide sheath from the packaging tape, and then holds the sheath seat 2 to insert the sheath tube 1 into the patient's urethra through the conical expansion tube 3. Since the urethra is in a closed state when the patient is not urinating, the patient's urethra can be stretched open by the conical expansion tube 3 so that the sheath tube 1 can be inserted more smoothly. When the conical expansion tube 3 stretches the urethra, the urethra will give the conical expansion tube 3 a reaction force, and then the high pressure installed on the outer wall of the conical expansion tube 3 The molecular microporous membrane capsule 301 will be squeezed, and then the human lubricating fluid stored in the polymer microporous membrane capsule 301 will seep out through the micropores of the polymer microporous membrane capsule 301 under the action of pressure, and then be smeared on the urethral wall to lubricate the urethral wall, thereby preventing the sheath 1 from damaging the inner mucosa on the inner wall of the urethra due to friction with the inner wall of the urethra after being inserted into the urethra, causing harm to the patient, and effectively reducing the damage to the mucosa during the operation. When the guide sheath is inserted into place, the medical staff can insert the endoscope and other instruments through the guide sheath into the urethra for surgical operations.

[0022] Embodiment 2:

[0023] Reference Figure 1-Figure 3 The disposable sterile ureteral guide sheath is basically the same as that in Example 1, and further, the sheath tube 1 and the tapered dilator tube 3 are hard tubes respectively. During production, the sheath tube 1 and the tapered dilator tube 3 can be made of hard plastic tubes or stainless steel tubes, thereby improving the hardness of the guide sheath and preventing the guide sheath from being deformed by urethral compression, which affects the extension of subsequent instruments.

[0024] Embodiment 3:

[0025] Reference Figure 1-Figure 3 The disposable sterile ureteral guide sheath is basically the same as that of Example 2, and furthermore, a medical-grade rubber soft cover 101 is fixedly connected to the outer wall of the sheath tube 1. By arranging the rubber soft cover 101 on the outer side of the sheath tube 1, when the sheath tube 1 is inserted into the patient's urethra, the sheath tube 1 can be deformed to a certain extent under the squeezing of the urethra, thereby improving the softness of the guide sheath and improving the comfort of the patient.

[0026] The outer side of the polymer microporous membrane capsule 301 is provided with a protective sleeve 302, and a friction layer is provided on the inner side wall where the protective sleeve 302 and the rubber soft sleeve 101 are in contact. Through the provision of the protective sleeve 302, after the guide sheath is produced, the protective sleeve 302 can be sleeved on the outer side of the polymer microporous membrane capsule 301, thereby protecting the polymer microporous membrane capsule 301 and preventing the human body lubricating fluid stored in the polymer microporous membrane capsule 301 from leaking out during bagging, transportation or storage, thereby affecting subsequent use. By providing a friction layer on the inner side wall where the protective sleeve 302 and the rubber soft sleeve 101 are in contact, after the protective sleeve 302 is installed on the guide sheath, under the action of the friction layer, the stability of the protective sleeve 302 installed on the guide sheath can be improved to avoid the problem of falling off.

[0027] Embodiment 4:

[0028] Reference Figure 1-Figure 3 The disposable sterile ureteral guide sheath is basically the same as Example 3, and furthermore: the sheath seat 2 is rotatably connected to the sheath tube 1. By rotatably connecting the sheath seat 2 to the sheath tube 1, when the guide sheath is inserted into the patient's urethra, it is convenient to rotate the external tube 201 to the same side according to the position of the external cleaning device or suction device, so as to facilitate the external tube 201 to be better connected with the external device.

[0029] The surface of the sheath seat 2 is designed to be inwardly curved. When the medical staff holds the sheath seat 2 and extends the sheath tube 1 into the patient's urethra through the conical expansion tube 3, the surface of the sheath seat 2 is designed to be inwardly curved, such as Figure 2 As shown in the shape of the middle sheath seat 2, it is convenient for medical staff to better hold the sheath seat 2, providing convenience for the work of medical staff.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. A disposable sterile ureteral guide sheath, characterized in that: include: A sheath tube (1), a conical expansion tube (3) and a sheath seat (2), wherein the conical expansion tube (3) and the sheath seat (2) are respectively connected to two ends of the sheath tube (1); An external tube (201) is fixedly connected to one side of the sheath seat (2) and is connected to a channel inside the sheath seat (2); A polymer microporous membrane capsule (301) filled with human body lubricating fluid is fixedly connected to the outer wall of the conical expansion tube (3).

2. The disposable sterile ureteral guide sheath according to claim 1, characterized in that: The sheath tube (1) and the tapered expansion tube (3) are both hard tubes.

3. The disposable sterile ureteral guide sheath according to claim 1, characterized in that: A medical-grade rubber soft sleeve (101) is fixedly connected to the outer wall of the sheath tube (1).

4. The disposable sterile ureteral guide sheath according to claim 3, characterized in that: The outer side of the polymer microporous membrane capsule (301) is provided with a protective sleeve (302), and the inner side wall of the protective sleeve (302) in contact with the rubber soft sleeve (101) is provided with a friction layer.

5. The disposable sterile ureteral guide sheath according to claim 1, characterized in that: The sheath seat (2) is rotationally connected to the sheath tube (1).

6. The disposable sterile ureteral guide sheath according to claim 1, characterized in that: The surface of the sheath seat (2) is designed to be in an inner arc shape.

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