CN204318697U - With the mirror sheath structure of protective layer - Google Patents

Abstract

The utility model relates to a medical instrument, in particular to a sheath tube used in lithotripsy of the urinary system. A mirror sheath structure with a protective layer, including a sheath body and a sheath tube, the sheath tube is provided with a sheath tube, and the sheath tube includes two layers, one of which is an outer sheath tube, and the outer sheath tube is connected to the sheath body, The other layer is the inner sheath tube, the inner sheath tube is located in the outer sheath tube, and the cross section of the inner sheath tube is smaller than the outer sheath tube. The utility model provides a mirror sheath with a protective layer, which is simple in structure, effectively crushes stones and prevents damage to the endoscope at the same time, and improves the service life of the endoscope; it solves the lithotripsy surgery used in the urinary system in the prior art The endoscope in the study is prone to breakage due to the use of lithotripsy instruments, which increases the technical problems of surgical risks.

Description

Mirror sheath structure with protective layer

technical field

The utility model relates to a medical instrument, in particular to a sheath tube used in lithotripsy of the urinary system.

Background technique

With the development of medical technology, there are more and more types and products of medical devices. The endoscope system has experienced a century of development and has become more and more widely used. In recent years, many companies have developed many different types of endoscopes. The use of more and more endoscopes facilitates clinical diagnosis, relieves patients' clinical pain and improves the level of surgery. Endoscopes are often equipped with a sheath during use, such as the Chinese patent: "A Medical Disposable Choledochoscope Sheath (CN2013200452796)", which includes a hollow tube and a connecting seat connected to the hollow tube. The front end of the hollow tube is set There is a curved guide tube made of medical plastic, which is integrally formed with the hollow tube, the connecting seat is connected with the rear end of the hollow tube, and the inner wall of the connecting seat is provided with a sealing ring. The mirror sheath of this endoscope is relatively common, and the endoscope use channel and instrument channel are distinguished in the mirror sheath.

Endoscopes are used in various operations such as ear, nose and throat, biliary tract, urethra, etc. Among them, in the lithotripsy surgery of the urinary system, the endoscope is often easily damaged due to the use of lithotripsy equipment. Stone is a lithotripsy device with a large kinetic energy that needs to be used. While effectively crushing stones, it will inevitably cause damage to the endoscope and mirror sheath system. Therefore, doctors should be careful when using it, which increases the risk of surgery and the treatment cost of patients. high.

Contents of the invention

The utility model provides a mirror sheath with a protective layer, which is simple in structure, effectively crushes stones and prevents damage to the endoscope at the same time, and improves the service life of the endoscope; it solves the lithotripsy surgery used in the urinary system in the prior art The endoscope in the study is prone to breakage due to the use of lithotripsy instruments, which increases the technical problems of surgical risks.

The above-mentioned technical problems of the utility model are solved by the following technical solutions: a mirror sheath structure with a protective layer, including a sheath body and a sheath tube, the sheath tube is provided with a sheath tube, and the sheath tube includes two layers, wherein One layer is an outer sheath tube, which is connected to the sheath body, and the other layer is an inner sheath tube, which is located in the outer sheath tube, and the cross section of the inner sheath tube is smaller than that of the outer sheath tube. The inner sheath and the outer sheath consist of a mixed structure of single-layer and double-layer sheaths. Since the cross-section of the inner sheath is smaller than the outer sheath, the inner sheath part of the mirror sheath is double-layered, while the outer sheath has no Where it overlaps with the inner sheath is still a single-layer sheath. The endoscope is inserted into the place where the outer sheath and the inner sheath do not overlap, that is, the part of the single-layer sheath, and the lithotripsy device that needs to perform lithotripsy with high kinetic energy, due to the large kinetic energy, the instrument part penetrates into the double-layer Inside the sheath, that is, the part where the inner sheath and the outer sheath overlap, that is, inside the inner sheath. Due to the double-layer sheath wall, the rigidity of the sheath is increased to ensure that the sheath will not be bent during the operation, which also protects the endoscope from being broken and improves the service life of the endoscope. It is also convenient for doctors to use. The cost of the sheath is relatively low, and if the sheath is broken, it can be easily replaced, while the cost of the endoscope is relatively high, so the cost is also saved.

Preferably, the inner sheath tube and the outer sheath tube have the same length, and the wall thickness of the inner sheath tube is 0.1-0.25 mm. The lengths of the inner and outer sheaths are the same, but not exactly the same in an absolute sense. The length difference between the two can be about 0.1mm. The inner sheath can be slightly longer than the outer sheath at the end of the sheath, so that the ends of the two parts do not overlap. Ensure the convenience of using the endoscope and instruments, and at the same time ensure the support and protection of the endoscope when in use. The wall thickness of the inner sheath determines how much kinetic energy the lithotripsy device can withstand.

Preferably, the sheath body is covered with a lock cap, and a liquid valve is connected on one side of the sheath body, and the liquid valve communicates with both the inner sheath tube and the outer sheath tube. The lock cap and the endoscope are integrated into a whole, and at the same time, the external liquid valve allows liquid to enter the inner sheath tube and the outer sheath tube through the liquid valve, and the structure is simple.

Preferably, the cross-sections of the inner sheath and the outer sheath are shaped surfaces, and the area of the cross-section of the inner sheath is 0.4-0.65 times the area of the cross-section of the outer sheath.

Therefore, the mirror sheath with a protective layer of the present utility model has the following advantages: because the endoscope mirror sheath system adopts an active intervention mode, the lithotripsy instrument only damages the mirror sheath, which plays a good role in the endoscope. Protective effects. The price of the mirror sheath is far lower than that of the endoscope, and the hospital only needs to provide a few more mirror sheaths. When doctors operate, they can act with confidence, which improves the reliability of the operation and reduces the risk of the operation, which is of great significance to the convenience of the operation. For patients, the operation is safe and reliable, and the operation cost can be effectively reduced.

Description of drawings

Fig. 1 is an overall schematic diagram of a mirror sheath structure with a protective layer.

Fig. 2 is a cross-sectional enlarged schematic diagram of the inner and outer mirror sheaths.

Detailed ways

Below through embodiment, in conjunction with accompanying drawing, the technical scheme of utility model is described further in detail.

Example:

As shown in Figures 1 and 2, a mirror sheath structure with a protective layer includes a cylindrical sheath body, and a sheath tube is arranged in the sheath body. The sheath tube is composed of an inner sheath tube and an outer sheath tube. The inner sheath tube and the outer sheath tube have the same length. The cross-section of the inner sheath tube and the outer sheath tube is shaped. 0.5 times the area of the cross-section of the tube, part of the sheath wall of the inner sheath tube is connected to the inner wall of the outer sheath tube, and the part where the inner sheath tube and the outer sheath tube are connected is spot welded to connect the inner sheath tube and the outer sheath tube The position is fixed. The outer sheath is divided into upper and lower parts by the inner sheath, the upper part is composed of the outer wall of the inner sheath and the inner wall of the outer sheath, and the lower part is composed of the sheath wall of the inner sheath. Part of the lithotripsy equipment. A lock cap is sleeved on the sheath body, and the mirror sheath is integrated with the endoscope through the lock cap. A liquid valve is connected to the front end of the sheath body, and the liquid valve communicates with the inner sheath tube and the outer sheath tube, and the liquid can enter the inner sheath tube and the outer sheath tube through the liquid valve.

The mirror sheath with protective layer is integrated with the endoscope through the lock cap 4, the mirror tube of the endoscope is inserted into the upper space of the sheath tube, and the lower layer is the instrument channel. When the doctor uses it, the mirror sheath has two upper and lower layers to isolate the mirror from the instrument. During the operation, when the instrument has a large vibration, such as ultrasonic lithotripsy, it can protect the mirror tube from damage. The damage is caused by the sheath tube. Only the sheath needs to be replaced at that time. The sheath tube is composed of two layers, and the rigidity of the sheath tube is increased to ensure that the sheath tube will not be bent during the operation and protect the endoscope from being broken.

Claims (5)

1. a mirror sheath structure with a protective layer, comprising a sheath and a sheath, is characterized in that: the sheath is provided with a sheath, and the sheath comprises two layers, wherein one layer is an outer sheath, and the outer sheath Connected with the sheath body, the other layer is the inner sheath tube, the inner sheath tube is located in the outer sheath tube, and the cross section of the inner sheath tube is smaller than the outer sheath tube. 2. The mirror sheath structure with protective layer according to claim 1, characterized in that: the inner sheath tube and the outer sheath tube have the same length, and the wall thickness of the inner sheath tube is 0.1-0.25mm. 3. The mirror sheath structure with a protective layer according to claim 1 or 2, characterized in that: said sheath body is covered with a lock cap, and a liquid valve is connected externally on one side of the sheath body, and the liquid valve and the inner sheath Both the tube and the outer sheath are connected. 4. the mirror sheath structure with protective layer according to claim 1 or 2, is characterized in that: the cross-section of described inner sheath body and outer sheath body is profiled surface, and the area of the cross-section of inner sheath body is 0.4 to 0.65 times the area of the cross-section of the outer sheath. 5. The mirror sheath structure with protective layer according to claim 3, characterized in that: the cross-sections of the inner sheath body and the outer sheath body are shaped surfaces, and the area of the cross-section of the inner sheath body is equal to that of the outer sheath body. 0.4~0.65 times the area of the body cross section.