Three-channel cystoscope catheter

Abstract

The three-channel cystoscope catheter comprises a cystoscope bridge, an instrument body, a valve body, a catheter body and a catheter head, the catheter head is arranged on the front end portion where the catheter body is located, the valve body is arranged on the rear end portion where the catheter body is located, and the catheter body is of a tubular structure penetrating front and back; an instrument cavity and a cystoscope cavity which are mutually independent are formed in the catheter body in the tubular axis direction, and a water outlet cavity is formed in a gap between the outer walls of the instrument cavity and the cystoscope cavity and the inner wall of the cavity of the catheter body; a water outlet hole communicated with the water outlet cavity channel is formed in the outer wall of the rear end part where the catheter body is located; the instrument body is arranged at the rear end of the valve body and communicated with the end of the instrument cavity and the end of the cystoscope cavity. The whole device adopts the independent instrument cavity and the water outlet cavity, continuous convection is formed when water is injected, the visual field of the cystoscope in a human body is kept clear, the cystoscope is safe, and urinary system examination, sampling, minimally invasive surgery and the like are completed effectively and accurately.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to a three-channel cystoscope catheter. BACKGROUND

[0002] In the medical field, such as urology, urethral cystoscopes used in the examination, sampling or operation of the human urinary system need to be combined with accessories such as a sheath, a obturator and an operator to enter the urethra. The front end of the working sheath tube of the sheath is open, so that the medical instruments passing through the inner cavity of the sheath contact the patient, and the bacteria naturally contaminate the medical instruments. Although the medical instruments are repeatedly used after disinfection, the structure of the cystoscope, the sheath, the obturator and the operator is relatively complex, and it is difficult to completely disinfect. The cystoscope, the sheath, the obturator and the operator are very precise and high in cost, and the repeated disinfection causes the loss of the function of the medical instruments, and the incomplete disinfection easily causes cross infection of the patient. In addition, the sterile sheath is also used, which is generally made of stainless steel and is high in cost and discarded after use, thereby increasing the cost.

[0003] In Chinese Patent Application Publication No. CN101313841A, a cystoscopy sheath is disclosed, which is a double-channel structure and can simultaneously provide an endoscope and surgical instruments to enter the human urinary system for diagnosis. However, the structure has the following problems: 1. No water continuous convection function. The water inlet channel (water inlet valve) and the water outlet channel (water outlet valve) are connected and shared with the instrument channel. When water is injected into the natural cavity of the human urinary system, the water outlet valve must be closed, otherwise the water will flow out of the water outlet channel (water outlet valve) and cannot enter the natural cavity of the human urinary system. 2. Cannot be used for sampling and minimally invasive surgery. The water inlet channel (water inlet valve) and the water outlet channel (water outlet valve) of the cystoscopy sheath share one channel, which cannot realize the water continuous convection effect. That is, when sampling or surgery, the lesion of the human body is treated, the foreign matter or blood from the lesion cannot be discharged in time, the water is contaminated and becomes turbid, the field of view of the cystoscope becomes blurred, and sampling and minimally invasive surgery cannot be performed. 3. The short bridge connected to the cystoscope is easy to fall off or deform. When the self-locking screw is too deep, the short bridge is easy to deform, and when the self-locking screw is withdrawn, the short bridge falls off. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a three-channel cystoscope catheter, which solves the above technical problems in the prior art.

[0005] The utility model can achieve the above-mentioned purposes through the following technical solutions.

[0006] A three-channel cystoscope catheter, comprising a mirror bridge, an instrument body, a valve body, a catheter body and a catheter head,

[0007] The catheter head is arranged at the front end of the catheter body, the valve body is arranged at the rear end of the catheter body, and the catheter body is a tubular structure extending from front to back;

[0008] An instrument lumen and a cystoscope lumen are arranged in the catheter body along the tubular axis and are independent of each other, and the outer wall of the instrument lumen and the cystoscope lumen and the inner wall of the lumen of the catheter body form a water outlet lumen;

[0009] A water inlet hole is arranged on the outer wall of the front end of the catheter body and communicates with the water outlet lumen, and a water outlet hole is arranged on the outer wall of the rear end of the catheter body and communicates with the water outlet lumen;

[0010] The instrument body is arranged at the rear end of the valve body and communicates with the instrument lumen and the cystoscope lumen at the end, respectively.

[0011] Further, a limiting component is arranged at the outer opening end of the mirror bridge, and the limiting component reciprocates to clamp and fix or release the externally connected cystoscope.

[0012] Further, the limiting component comprises a spring piece and a spring element, a buckle hole is arranged in the middle part of the spring piece, and the buckle hole matches the through hole in the middle part of the mirror bridge;

[0013] A through hole is arranged on the outer wall of the opening end of the mirror bridge and is perpendicular to the central axis, the through hole forms two groups of central symmetries, and the spring piece penetrates the through hole in the thickness direction;

[0014] The lower end of the spring piece is connected to the outer wall of the mirror bridge through the spring element, so that the spring piece reciprocates in the extension direction of the spring element.

[0015] Further, a spring positioning hole is arranged on the lower outer wall of the mirror bridge, the lower end surface of the spring piece is bent to an L-shaped structure downward, and one end of the spring element is implanted in the spring positioning hole to be fixed, and the L-shaped surface of the spring piece fixes the other end of the spring element.

[0016] Further, a limiting pin is arranged on the through hole away from the spring positioning hole;

[0017] A U-shaped limiting groove is arranged at the front end of the buckle hole, the U-shaped limiting groove and the buckle hole are integrally formed, the limiting pin is located in the moving direction of the U-shaped limiting groove, and the U-shaped limiting groove limits the position movement of the limiting pin.

[0018] Further, a clamping assembly is arranged on the side of the connecting end of the mirror bridge, and a U-shaped sliding groove is arranged on the other side of the mirror bridge opposite to the clamping assembly, and the connecting end of the mirror bridge is connected and fixed with the valve body.

[0019] Further, the water outlet cavity formed in the inner wall of the catheter body is blocked by the partition plate at both ends.

[0020] Further, the first control valve is communicated with the water outlet hole and realizes on-off control, and the second control valve is communicated with the external water inlet channel and realizes on-off control.

[0021] Further, the first hole is a blind hole structure with a closed end, and the bladder mirror cavity of the catheter body is blocked at the end;

[0022] The second hole is a through hole structure, and the instrument cavity of the catheter body is communicated.

[0023] Further, the blind hole of the first hole is a transparent structure, and the front end of the second hole is provided with a groove opening.

[0024] The beneficial effects of the utility model are as follows:

[0025] 1. The device adopts independent instrument cavities and water outlet cavities, and forms continuous convection when water is injected, so that the cystoscope is kept in the human body with clear vision, and the urinary system examination, sampling and minimally invasive surgery are safely, effectively and accurately completed.

[0026] 2. The front end of the catheter head of the three-channel cystoscope catheter of the device is provided with a groove, the groove is connected and communicated with the instrument cavity, the groove and the slope form a corresponding angle, and the instruments and equipment used for examination, sampling or minimally invasive surgery are kept from moving within the range of the cystoscope vision.

[0027] 3. The catheter body of the device is an integrally formed pipe made of metal, and is provided with independent instrument cavities and cystoscope cavities, and the gap between the outer wall and the inner wall of the catheter body forms a water outlet cavity.

[0028] 4. The three-channel cystoscope catheter of the device is an integrated type, and is connected and fixed with the cystoscope by using a spring automatic clamping type, which is simple, convenient, time-saving and labor-saving. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced.

[0030] Figure 1 It is the whole structure schematic diagram of the embodiment of the utility model;

[0031] Figure 2 It is the whole cross section structure schematic diagram of the embodiment of the utility model;

[0032] Figure 3 It is the mirror bridge whole structure schematic diagram of the embodiment of the utility model;

[0033] Figure 4 It is the mirror bridge cross section structure schematic diagram of the embodiment of the utility model;

[0034] Figure 5 It is the mirror bridge shell body structure schematic diagram of the embodiment of the utility model;

[0035] Figure 6 It is the elastic sheet structure schematic diagram of the embodiment of the utility model;

[0036] Figure 7 It is the instrument body structure schematic diagram of the embodiment of the utility model;

[0037] Figure 8 It is the valve body structure schematic diagram of the embodiment of the utility model;

[0038] Figure 9 It is the catheter body whole structure schematic diagram of the embodiment of the utility model;

[0039] Figure 10 It is the catheter body right cross section structure schematic diagram of the embodiment of the utility model;

[0040] Figure 11 It is the catheter head whole structure schematic diagram of the embodiment of the utility model;

[0041] Figure 12 It is the catheter head side cross section structure schematic diagram of the embodiment of the utility model. DETAILED DESCRIPTION

[0042] The technical scheme in the embodiment of the utility model will be described clearly and completely below with reference to the drawings in the embodiment of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0043] As Figure 1 , Figure 2As shown, this utility model embodiment provides a three-channel cystoscope catheter, including a bridge 1, an instrument body 2, a valve body 3, a catheter body 4, and a catheter head 5. The catheter head 5 is located at the front end of the catheter body 4, and the valve body 3 is located at the rear end of the catheter body 4 (at this time, the catheter body 4 is installed between the catheter head 5 and the valve body 3). The catheter body 4 is a tubular structure that runs through the front and rear. The instrument body 2 is installed in the circular hole at the rear end of the valve body 3. Finally, the front end screw of the bridge 1 is tightened and installed on the instrument body 2.

[0044] like Figure 9 , Figure 10 As shown, the catheter body 4 is a tubular structure (it can be a one-piece molded tube made of metal). Inside the catheter body 4, along the tubular axis, are two independent instrument channels 420 and cystoscope channels 410 (i.e., the instrument channels 420 and cystoscope channels 410 are also tubular structures implanted into the cavity of the catheter body 4). The gap between the outer wall of the instrument channels 420 and cystoscope channels 410 and the inner wall of the catheter body 4 forms a water outlet channel 400. Water inlets communicating with the water outlet channel 400 are provided on the outer walls of the left and right sides at the front end of the catheter body 4. 401, and an outlet hole 402 connected to the outlet cavity 400 is provided on the outer wall of the rear end of the catheter body 4. The opening of the inlet hole 401 is designed as an arc-shaped funnel to make the water flow into the hole more smoothly, and at the same time avoids scratching the natural cavity when entering the human body. At this time, the two ends of the outlet cavity 400 formed in the inner wall of the catheter body 4 are blocked by the partition 41 respectively. That is, the two ends of the outlet cavity 400 are connected to the inlet hole 401 and the outlet hole 402 respectively. That is, when water is injected, the instrument cavity 420 and the outlet cavity 400 form convection.

[0045] like Figure 3 , Figure 4 , Figure 5 As shown, a limiting component 11 is formed at the outer opening end where the endoscope bridge 1 is located. The reciprocating motion of the limiting component 11 can clamp and fix or detach the external cystoscope.

[0046] At this time, the limiting component 11 includes a spring piece 111 (such as...) Figure 6 As shown), the limiting pin 112, spring 113, and spring piece 111 are provided with a through buckle hole 1111 in the middle, and the buckle hole 1111 matches the through hole in the middle of the mirror bridge 1.

[0047] A through-hole 101 is provided on the outer wall of the opening end of the mirror bridge 1 and perpendicular to the central axis. The through-hole 101 forms two centrally symmetrical sets respectively set on the outer wall of the opening end of the mirror bridge 1, and realizes that the spring piece 111 passes through the through-hole 101 in the thickness direction. At this time, the spring piece 111 can only reciprocate within the area between the two sets of through-holes 101.

[0048] The lower end of the elastic sheet 111 is connected to the outer wall of the bridge 1 by the spring member 113 to realize the reciprocating movement of the elastic sheet 111 in the extension direction of the spring member 113. In order to ensure the stability of the reciprocating movement of the elastic sheet 111, a spring positioning hole 102 is formed in the lower outer wall of the bridge 1, and the lower end of the elastic sheet 111 is bent downward to form an L-shaped structure (a bent pressing surface is formed). During use, one end of the spring member 113 is implanted in the spring positioning hole 102 to fix it, and the L-shaped surface (i.e. the pressing surface) of the elastic sheet 111 forms a fixation to the other end of the spring member 113. At this time, only the L-shaped pressing surface of the elastic sheet is pressed, and at this time the buckle hole 1111 is opened. After the cystoscope is installed in place, the hand is released, the L-shaped pressing surface is automatically reset, and the buckle hole 1111 on the elastic sheet 111 is clamped and fixed to the insertion end of the cystoscope under the action of the reset spring member 113.

[0049] A limiting pin 112 is arranged on the through hole 101 away from the spring positioning hole 102 (and the through hole 101 close to the spring positioning hole 102 is a through structure), and a U-shaped limiting groove 1121 is formed in the front end of the buckle hole 1111, so that the U-shaped limiting groove 1121 and the buckle hole 1111 are integrally formed, the limiting pin 112 is located in the moving direction of the U-shaped limiting groove 1121, and the U-shaped limiting groove 1121 forms a position limiting for the limiting pin 112. Through the arrangement of the limiting pin 112, the reciprocating movement of the elastic sheet 111 can be limited, and the position of the through hole 101 can be avoided from being deviated for a long time.

[0050] A holding assembly 12 is arranged on the connecting end side of the bridge 1, and a U-shaped sliding groove 121 is arranged on the other side of the bridge 1 opposite to the holding assembly 12. The connecting end of the bridge 1 is connected and fixed with the valve body 3, so that the bridge 1 and the catheter body 4 are connected and fixed in a detachable manner.

[0051] As shown in Figure 7 , Figure 8 , the instrument body 2 is arranged at the rear end of the valve body 3 and is in communication with the instrument cavity 420 and the cystoscope cavity 410 respectively. At this time, the cavity connected with the instrument body 2 is outwardly inclined at an angle of 12° to 18°, and the through hole entrance of the cystoscope cavity 410 is arranged as a horn mouth to make the instrument equipment enter smoothly.

[0052] The valve body 3 comprises a first control valve 301 and a second control valve 302. The first control valve 301 is in communication with the water outlet hole 402 and realizes on-off control, and the second control valve 302 is in communication with the external water inlet channel and realizes on-off control.

[0053] As shown in Figure 11 , Figure 12As shown, the catheter head 5 comprises a first hole 501 and a second hole 502, the first hole 501 is in a blind hole structure with a closed end, and in order to facilitate observation, the structure is provided as a sealed transparent inclined surface structure, at this time the inclination angle of the transparent inclined surface can be set to 0°, 12°, 25°, 30° and 70°, and the blind hole forms a blockage to the cystoscope lumen 410 end of the catheter body 4.

[0054] The second hole 502 is in a through hole mechanism and forms a communication to the instrument lumen 420 end of the catheter body 4 and is outward, and a groove opening 5021 is provided at the front end where the second hole 502 is located, so that the groove opening 5021 and the inclined surface of the first hole 501 form a corresponding angle (not a right angle), and its function is to keep the instrument equipment clearly visible within the cystoscope visual field range during examination, sampling and minimally invasive surgery.

[0055] Specific use:

[0056] 1. Take out the three-channel cystoscope catheter, loosen the mirror bridge holding screw, insert the cystoscope into the catheter body 4 from the mirror bridge 1 entrance, and press the spring sheet 111 to clamp the cystoscope.

[0057] 2. Adjust the mirror bridge 1 to achieve the best viewing effect, lock the holding screw of the mirror bridge 1, and connect the cystoscope image system.

[0058] 3. Insert the disposable three-channel cystoscope catheter working part into the corresponding position of the human urinary system.

[0059] 4. Turn off the water outlet valve switch of the second control valve 302, turn on the water inlet valve switch of the first control valve 301, and connect the water inlet system.

[0060] 5. Insert the instrument equipment, and at the same time open the water outlet valve, and then perform the operation.

[0061] The above shows and describes the basic principle, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A three-channel cystoscope catheter, comprising a mirror bridge (1), an instrument body (2), a valve body (3), a catheter body (4) and a catheter head (5), characterized in that, the catheter head (5) is arranged at the front end of the catheter body (4), the valve body (3) is arranged at the rear end of the catheter body (4), and the catheter body (4) is a tubular structure extending from front to back; an instrument lumen (420) and a cystoscope lumen (410) are arranged in the catheter body (4) along the tubular axis direction, the outer walls of the instrument lumen (420) and the cystoscope lumen (410) and the inner wall of the catheter body (4) form a water outlet lumen (400); a water inlet hole (401) is arranged on the outer wall of the front end of the catheter body (4) and communicates with the water outlet lumen (400), and a water outlet hole (402) is arranged on the outer wall of the rear end of the catheter body (4) and communicates with the water outlet lumen (400); the instrument body (2) is arranged at the rear end of the valve body (3) and communicates with the instrument lumen (420) and the cystoscope lumen (410) respectively.

2. The three-channel cystoscope catheter of claim 1, wherein, a limiting component (11) is arranged at the outer opening end of the mirror bridge (1), and reciprocating movement of the limiting component (11) forms clamping and fixing or disengagement of the externally connected cystoscope.

3. The three-channel cystoscope catheter of claim 2, wherein, the limiting component (11) comprises a spring piece (111) and a spring member (113), a buckle hole (1111) is arranged in the middle of the spring piece (111), and the buckle hole (1111) matches the through hole in the middle of the mirror bridge (1); a through hole (101) is arranged on the outer wall of the opening end of the mirror bridge (1) and is perpendicular to the central axis direction, the through hole (101) forms two groups of central symmetry, and the spring piece (111) penetrates the through hole (101) in the thickness direction; the lower end of the spring piece (111) is connected to the outer wall of the mirror bridge (1) through the spring member (113), so that the spring piece (111) reciprocates in the extension direction of the spring member (113).

4. The three-channel cystoscope catheter of claim 3, wherein, a spring positioning hole (102) is arranged on the lower outer wall of the mirror bridge (1), the lower end surface of the spring piece (111) is bent to form an L-shaped structure, and one end of the spring member (113) is implanted in the spring positioning hole (102) to fix the L-shaped surface of the spring piece (111) and fix the other end of the spring member (113).

5. The three-channel cystoscope catheter of claim 3, wherein, a limiting pin (112) is arranged on the through hole (101) away from the spring positioning hole (102); a U-shaped limiting groove (1121) is arranged at the front end of the buckle hole (1111), the U-shaped limiting groove (1121) and the buckle hole (1111) are integrally formed, the limiting pin (112) is located in the moving direction of the U-shaped limiting groove (1121), and the U-shaped limiting groove (1121) limits the position movement of the limiting pin (112).

6. The three-channel cystoscope catheter of claim 1, wherein, The mirror bridge (1) is provided with a holding assembly (12) on the side of the connecting end, and a U-shaped sliding groove (121) is formed on the other side of the mirror bridge (1) opposite to the holding assembly (12), and the connecting end of the mirror bridge (1) is connected and fixed with the valve body (3).

7. The three-channel cystoscope catheter of claim 1, wherein, The water outlet cavity (400) formed in the inner wall of the catheter body (4) is respectively sealed by the partition (41) at both ends.

8. The three-channel cystoscope catheter of claim 1, wherein, The valve body (3) comprises a first control valve (301) and a second control valve (302), the first control valve (301) is communicated with the water outlet hole (402) and realizes on-off control, and the second control valve (302) is communicated with the external water inlet channel and realizes on-off control.

9. The three-channel cystoscope catheter of claim 1, wherein, The catheter head (5) comprises a first hole (501) and a second hole (502), the front end of the first hole (501) is a blind hole structure with a closed end, and the bladder mirror cavity (410) of the catheter body (4) is sealed at the end; The second hole (502) is a through hole mechanism, and the instrument cavity (420) of the catheter body (4) is communicated.

10. The three-channel cystoscope catheter of claim 9, wherein, The blind hole slope structure of the front end of the first hole (501) is transparent; and the front end of the second hole (502) is provided with a groove opening (5021).

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