CN209404735U - A kind of choledochoscope sheath - Google Patents

Abstract

The utility model discloses a kind of choledochoscope sheaths, it includes attachment base and conduit portion, the conduit portion includes connecting pin and open end, the attachment base is connected and is integrally formed by the connecting pin with conduit portion, from the connecting pin to the open end, gradually thinning and the conduit portion hardness is gradually become smaller the pipe thickness of the conduit portion from the connecting pin to the open end, which further includes the camera control unit being provided at its inner portion close to conduit portion end；Wireless receiver is provided in the camera control unit accurately to control camera for receiving external wireless signals.The hardness of the conduit portion is gradually become smaller from the connecting pin to the open end, therefore the conduit portion and the friction of the choledochoscope crust are gradually reduced during choledochoscope stretches and changes into angle, the abrasion probability for thereby reducing choledochoscope crust, extends the service life of choledochoscope to the full extent.

Description

A kind of choledochoscope sheath

Technical field

The utility model relates to the field of medical instrument technology, and in particular to a kind of choledochoscope for assisting choledochoscope to work Sheath.

Background technique

Liver inside and outside bile duct stone is China's common disease and frequently-occurring disease, and surgical operation is to handle the main method of such disease. With the extensive use of laparoscope minimal invasive techniques, under laparoscope through choledochus or (and) Via bile duct path with choledochoscope takes stone And it is the surgical required skill of liver and gallbladder pancreas that the bile duct through hepatectomy section, which takes stone,.At present clinically often by means of plastics or The sheath trocar of metal mold or special extended type choledochoscope guiding tube are open as stomach wall and the bridge between choledochus, bile duct, Doctor can control the rotation of head end bending angle and shank using its operation portion to carry out phase after choledochoscope enters extrahepatic duct Close diagnoses and treatment.Choledochoscope is soft lens comprising eyepiece portion, operation portion, insertion section, guide-lighting hose, guide-lighting insertion section five portion Point, rear three positions are wrapped up by rubber case, and internal structure is accurate.Its flexibility operated needs choledochoscope guiding tube to biliary tract Mirror carries out various dimensions support, and especially guidance tube cavity and open end is stress site with choledochoscope, choledochoscope and sheath or draws Conduit needs to pass in and out friction repeatedly, and cause choledochoscope protective layer rubber case be scored, distort, wear cracking, cut and Influence and damage the key position and main cause of its internal precision construction.All due to all at present sheath and choledochoscope guiding tube It is that hard such as plastics or metal material are constituted, it, must because coefficient of friction is big when choledochoscope and conduit cavity make frequent relative motion It so will affect the service life of choledochoscope.

Therefore, now provide a kind of friction less, the choledochoscope sheath small and that choledochoscope service life can be extended of abrasion.

Utility model content

For this purpose, the utility model provides a kind of choledochoscope sheath comprising attachment base and conduit portion, the conduit portion Including connecting pin and open end, the attachment base is connected and is integrally formed by the connecting pin with conduit portion, and feature exists In, the conduit portion pipe thickness from the connecting pin to the open end gradually thinning and the conduit portion hardness It is gradually become smaller from the connecting pin to the open end, the entire length of the choledochoscope sheath is 18-22cm, the conduit portion Length be 15-18cm, the tube wall maximum gauge of the conduit portion is 4-2mm, minimum thickness 2-0.2mm；The conduit Part includes being interconnected and integrally formed straight catheter and bending conduit, the straight catheter be set to the bending conduit with it is described It is connect between attachment base and by the bending conduit with the attachment base；The choledochoscope sheath further includes being provided at its inner portion close lead The camera control unit at tube portion end；Wireless receiver is provided in the camera control unit for receiving external wireless Signal and accurately control camera.

Preferably, the straight catheter is identical with the material of bending conduit, and the material is silica gel.

Preferably, the front end of the bending conduit is additionally provided with bent front ends, and forming in the bent front ends is inclined The opening of shape.

It is highly preferred that the curvature of the bent front ends is 16-18 °, the gradient of the opening is 140-150 °.

Preferably, the coating for reducing friction is also coated on the inner wall of the conduit portion.

Preferably, the internal diameter of the conduit portion is 7-9mm.

Preferably, anti-gas-leak structure is equipped in the attachment base；The anti-gas-leak structure is set as being mounted on the attachment base Internal channel in sealing ring or at least one layer of leakproof gas-bearing formation.

Preferably, which further includes being convenient for rotating and controlling the choledochoscope sheath side on the attachment base To rotating part.

It is highly preferred that the rotating part is set as the rotating handles being molded on the attachment base, or it is set as being molded over institute State the twisted line on the outer wall of attachment base.

Preferably, which further includes the elastic film being set in outside the bending conduit.

The utility model compared with the existing technology, has the following advantages that place:

In the present invention, the hardness of the conduit portion is gradually become smaller from the connecting pin to the open end, because This conduit portion and friction of the choledochoscope crust during choledochoscope stretches and changes into angle are gradually reduced, and then are dropped The low abrasion probability of choledochoscope crust, extends the service life of choledochoscope to the full extent.In addition, the choledochoscope sheath also wraps Include the camera control unit being provided at its inner portion close to conduit portion end；Wireless receiving is provided in the camera control unit Device is further able to improve the flexibility of choledochoscope control, expand accurately to control camera for receiving external wireless signals Its big visual field.Preferably, (i.e. the material of conduit portion for the moment) identical with the material of bending conduit when the straight catheter and The material is with thickness increase and when hardness increase, it is therefore possible to use the pipe thickness of the conduit portion is by the company Connecing end, gradually thinning mode realizes gradually becoming smaller for hardness to the open end, and which is simple and easy, it is particularly possible to reduce Abrasion of the conduit portion close to open end.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is choledochoscope sheath schematic diagram described in the utility model；

Description of symbols: 1- choledochoscope sheath；2- attachment base；3- conduit portion, 31- straight catheter, 32- bending conduit；4- Leakproof gas-bearing formation；5- rotating part.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

As shown in Figure 1, present embodiments providing a kind of choledochoscope sheath comprising attachment base 2 and conduit portion 3, it is described to lead Tube portion 3 includes connecting pin and open end, and the attachment base 2 is connected and is integrally formed by the connecting pin with conduit portion 3, It is characterized in that, the pipe thickness of the conduit portion 3 from the connecting pin to the open end the gradually thinning and conduit The hardness of part 3 is gradually become smaller from the connecting pin to the open end, and the entire length of the choledochoscope sheath 1 is 18-22cm, The length of the conduit portion 3 is 15-18cm, and the tube wall maximum gauge of the conduit portion 3 is 4-2mm, minimum thickness 2- 0.2mm；The conduit portion 3 includes interconnected and integrally formed straight catheter 31 and bending conduit 32, the straight catheter 31 It is connect between the bending conduit 32 and the attachment base 2 and by the bending conduit 32 with the attachment base 2；The biliary tract Mirror sheath 1 further includes the camera control unit being provided at its inner portion close to 3 end of conduit portion；Setting in the camera control unit There is wireless receiver accurately to control camera for receiving external wireless signals.

In the utility model, wireless receiver can be the various conventional wireless receivers in this field.

In the utility model, the entire length of the choledochoscope sheath is 18-22cm, and the length of the conduit portion is 15- 18cm, the tube wall maximum gauge of the conduit portion is 4-2mm, minimum thickness 2-0.2mm.Wherein, the gallbladder of the utility model The entire length of road mirror sheath and the length of conduit portion are long compared with the choledochoscope sheath of the prior art, the increase of choledochoscope sheath length The choledochoscope that can be more convenient for gos deep into abdominal cavity, expands visual field when abdominal operation (especially operation on biliary tract), and then improve hand The operability and accuracy of art.Why existing choledochoscope sheath length it is inadequate, the main reason for limiting its length be due to If length increase will necessarily extend the time of contact of choledochoscope sheath inner wall and choledochoscope crust, so as to cause choledochoscope crust It wears probability to increase, decline.And the choledochoscope sheath of the utility model is since the hardness of conduit portion is by the connecting pin It is gradually become smaller to the open end, so as to increase open end and choledochoscope in the case where keeping connecting pin certain degree of hardness Crust stickiness extends choledochoscope whole service life.

Wherein, in the present embodiment, reasonable length can be selected according to actual needs, as will be described the entirety of choledochoscope Length can be set to 18cm, 19cm, 20cm, 21cm, 22cm or be set as 18.2cm, 19.5cm, 20.7cm, 21.8cm or Other any values within the scope of 18-22cm；And the length of the conduit portion 3 can then be set as 15cm, 16cm, 17cm, 18cm Or other any values within the scope of 15.3cm, 16.6cm, 17.9cm or 15-18cm.

The straight catheter 31 is identical with the material of bending conduit 32, and the material is silica gel.The silica gel of the utility model can Think the various conventional silica gel types in this field, such as can be Germany watt gram R420/70 etc..

The front end of the bending conduit 32 is additionally provided with bent front ends, forms oblique open in the bent front ends Mouthful.Preferably, the curvature of the bent front ends is 16-18 °, and the gradient of the opening is 140-150 °, since this is practical The curvature of novel bent front ends and the gradient of opening compared with the respective curved degree of the choledochoscope sheath of the prior art and are inclined Gradient is big, so as to expand the display visual field of choledochoscope.As preferred embodiment, the curvature of the bent front ends is set It is 16 ° or 17 °, the gradient of the opening is set as 140 ° or 145 °；Certainly it is used as disposable embodiment, it can also will be curved Curvature and gradient are set as other any values in setting range.

Further, the internal diameter of the conduit portion 3 is 7-9mm, in the present embodiment, the preferably described conduit portion 3 it is interior Diameter is 7mm or 8mm or 9mm.

On the basis of the above, anti-gas-leak structure is equipped in the attachment base 2；Wherein, the anti-gas-leak structure is set as installing Sealing ring or at least one layer of leakproof gas-bearing formation 4 in the internal channel of the attachment base 2.

In the present embodiment, the choledochoscope sheath 1 further includes described convenient for rotating and controlling on the attachment base 2 The rotating part 5 in 1 direction of choledochoscope sheath, the rotating part can be set to the rotating handles being molded on the attachment base 2, can also be with Be set as being molded over the twisted line on the outer wall of the attachment base 2, consequently facilitating operating personnel pass through it is described on the attachment base 2 The direction of choledochoscope described in 5 regulation and control of rotating part and the choledochoscope sheath 1.Rotating part 5 and camera shooting in the present embodiment Head control unit cooperates jointly to be precisely controlled choledochoscope camera, convenient for operation observation and operation.

Preferably, the coating for reducing friction is also coated on the inner wall of the conduit portion 3.The coating is polyoxy Change vinyl coating, the setting of the coating can reduce the abrasion between the conduit portion and the choledochoscope.

Preferably, which further includes the elastic film layer being set in outside the bending conduit 32, the Thin Elastic Film can make the bending conduit 32 be not susceptible to rupture.It is highly preferred that in order to further prevent bending conduit 32 to be not susceptible to Rupture, the material of the elastic film layer are natural emulsion.It is further preferred that elastic film layer with a thickness of 0.1-0.3mm.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes still within the protection scope of the invention.

Claims (10)

1. a kind of choledochoscope sheath comprising attachment base (2) and conduit portion (3), and be provided at its inner portion close to conduit portion (3) the camera control unit held；The conduit portion (3) includes connecting pin and open end, the attachment base (2) and conduit part Divide (3) to connect and be integrally formed by the connecting pin, is provided with wireless receiver in the camera control unit to be used for It receives external wireless signals and accurately controls camera, which is characterized in that the pipe thickness of the conduit portion (3) is by the company Connect that end is gradually thinning to the open end and the hardness of the conduit portion (3) is gradually become from the connecting pin to the open end Small, the entire length of the choledochoscope sheath (1) is 18-22cm, and the length of the conduit portion (3) is 15-18cm, the conduit Partially the tube wall maximum gauge of (3) be 4-2mm, minimum thickness 2-0.2mm；The conduit portion (3) include be interconnected and Integrally formed straight catheter (31) and bending conduit (32), the straight catheter (31) are set to the bending conduit (32) and the company It is connect between joint chair (2) and by the bending conduit (32) with the attachment base (2).

2. choledochoscope sheath according to claim 1, which is characterized in that the material of the straight catheter (31) and bending conduit (32) Matter is identical, and the material is silica gel.

3. choledochoscope sheath according to claim 1, which is characterized in that the front end of the bending conduit (32) is additionally provided with bending Front end forms oblique opening in the bent front ends.

4. choledochoscope sheath according to claim 3, which is characterized in that the curvature of the bent front ends is 16-18 °, institute The gradient for stating opening is 140-150 °.

5. choledochoscope sheath according to claim 1, which is characterized in that be also coated on the inner wall of the conduit portion (3) For reducing the coating of friction.

6. choledochoscope sheath according to claim 1, which is characterized in that the internal diameter of the conduit portion (3) is 7-9mm.

7. choledochoscope sheath according to claim 1, which is characterized in that be equipped with anti-gas-leak structure in the attachment base (2)；Institute It states anti-gas-leak structure and is set as being mounted on sealing ring in the internal channel of the attachment base (2) or at least one layer of leakproof gas-bearing formation (4).

8. choledochoscope sheath according to claim 1, which is characterized in that it further includes being set on the attachment base (2) just In the rotating part (5) for rotating and controlling choledochoscope sheath (1) direction.

9. choledochoscope sheath according to claim 8, which is characterized in that the rotating part (5) is set as being molded over the connection Rotating handles on seat (2), or the twisted line being set as on the outer wall for being molded over the attachment base (2).

10. choledochoscope sheath according to claim 1, which is characterized in that the choledochoscope sheath (1) further include be set in it is described curved The elastic film of bent conduit (32) outside.