Flexible pipe pre-pressing structure for endoscope flushing pump

Abstract

The utility model discloses a hose pre-pressing structure for an endoscope flushing pump, and belongs to the technical field of peristaltic pumps. The roller is rotatably mounted on the shell; the hose at least partially surrounds the roller in the circumferential direction of the roller; the pressing block is mounted on the shell and can move between a first position and a second position relative to the hose; at least part of the hose is pressed between the roller and the pressing block at the first position, and at the second position, the part, corresponding to the pressing block, of the hose is in a non-pressed state; the position of the pressing block is changed, at least part of the hose is pressed between the rolling wheel and the pressing block at the first position, and intermittent water outlet of the hose can be achieved through rotation of the rolling wheel at the moment; at the second position, the part, corresponding to the pressing block, of the hose is in an unpressed state, so that the service life of the hose can be prolonged, and meanwhile, a worker can conveniently replace or install the hose.

Description

Technical Field

[0001] The utility model belongs to the technical field of peristaltic pumps, and in particular relates to a hose pre-compression structure for an endoscope flushing pump. Background Art

[0002] An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, and software. It has an image sensor, optical lens, light source, mechanical device, etc. It can enter the stomach through the mouth or other natural orifices into the body. Endoscopes can be used to see lesions that X-rays cannot show, so they are very useful to doctors. For example, with the help of an endoscope, doctors can observe ulcers or tumors in the stomach and develop the best treatment plan based on this.

[0003] An endoscope flushing pump is a device specifically used to provide flushing liquid for endoscopes. It is usually driven by a peristaltic pump and pushes the liquid flow by squeezing a hose. It has the following characteristics: Accurate flow: It can accurately control the flow of liquid to ensure a stable supply of liquid during endoscopic examination or surgery; Good sealing: During the process of transmitting liquid, the liquid will only contact the inner wall of the pump tube and will not leak, avoiding the risk of cross infection. Easy maintenance: The maintenance of a peristaltic pump is relatively simple. You only need to replace the pump tube regularly, and no complicated maintenance operations are required.

[0004] The working principle of a peristaltic pump is to use its internal drive to drive the roller in the pump head to rotate or move. When these parts squeeze the elastic hose in turn, a local sealed chamber is formed in the hose. As the roller continues to move, the sealed chamber moves forward along the hose, just like a worm crawling, thereby continuously sucking in liquid from the inlet end and discharging it from the outlet end.

[0005] However, the hose of the existing peristaltic pumps is always under pressure when leaving the factory or in a non-working state. The hose is compressed by the roller for a long time, which shortens the life of the hose itself. Therefore, the hose needs to be replaced frequently. Not only is the hose replacement process cumbersome, but it also increases the cost of consumables such as the hose.

[0006] Therefore, it is necessary to provide a hose pre-compression structure, which can timely compress the hose and thus improve the service life of the hose. Utility Model Content

[0007] The embodiment of the utility model provides a hose pre-compression structure for an endoscope flushing pump to solve the problems in the prior art.

[0008] The embodiment of the utility model adopts the following technical scheme: a hose pre-pressure structure for an endoscope flushing pump, comprising: a shell; a roller rotatably mounted on the shell; a hose, at least partially wrapped around the roller along the circumference of the roller; a pressure block, mounted on the shell and capable of being displaced relative to the hose between a first position and a second position; when in the first position, the hose is at least partially compressed between the roller and the pressure block, and when in the second position, the portion of the hose corresponding to the pressure block is in a non-compressed state.

[0009] Preferably, a substantially arc-shaped pressing surface is provided on the pressing block on a side facing the hose, and the curvature of the pressing surface is the same as or substantially the same as the curvature of the roller.

[0010] Preferably, in the first position, the center of a circle corresponding to the pressing surface overlaps with the center of a circle of the roller.

[0011] Preferably, a side wall is formed on at least one side of the pressing surface.

[0012] Preferably, one end of the pressing block is rotatably mounted on the shell, and the other end is formed with a folded edge.

[0013] Preferably, the hose pre-pressing structure further comprises an actuating member cooperating with the folded edge and forcing the pressing block to move from the second position to the first position.

[0014] Preferably, the actuating member comprises a lever rotatably mounted on the housing, and a lever block disposed on the lever and corresponding to the folded edge so as to rotate with the lever and thereby force the pressing block to move from the second position to the first position.

[0015] Preferably, the hose pre-compression structure also includes: a stopper, which is arranged on the shell; when the pressure block is in the second position, the free end of the pressure block abuts against the stopper, and when the pressure block is in the first position, the pressure block is out of contact with the stopper; a limiting member, which is arranged on the shell; when the pressure block is in the first position, the limiting member abuts against the lever to prevent the lever from rotating relative to the shell, thereby realizing the locking positioning of the pressure block in the first position.

[0016] Preferably, the actuating member comprises a dial button slidably mounted on the housing, and a pressing portion arranged on the dial button and corresponding to the folded edge so as to slide along with the dial button and thereby force the pressing block to move from the second position to the first position.

[0017] Preferably, a first limiting wall and a second limiting wall are respectively provided on the side walls of the shell, thereby forming a sliding groove for the sliding of the dial button; the actuator also includes an elastic member arranged on the dial button; when the pressing block is in the first position, the elastic member abuts against the second limiting wall to prevent the dial button from rotating relative to the shell, thereby realizing the locking positioning of the pressing block in the first position.

[0018] At least one of the above technical solutions adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0019] The utility model changes the position of the pressing block. When in the first position, the hose is at least partially compressed between the roller and the pressing block. At this time, intermittent water discharge from the hose can be achieved through the rotation of the roller. When in the second position, the portion of the hose corresponding to the pressing block is not compressed. In this state, the service life of the hose can be increased, and the hose can be pulled arbitrarily, which is convenient for workers to replace or install the hose. At the same time, when it is not needed, the pressing block can be moved to the second position, which can avoid the hose being squeezed by the pressing block and the roller when not in use. To a certain extent, the service life of the hose can be extended, and the consumables cost of the endoscope flushing pump is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is the main view of a hose pre-compression structure of the utility model Figure 1 ;

[0023] Figure 3 It is a side view of a hose pre-compression structure of the utility model;

[0024] Figure 4 This is the main view of a hose pre-compression structure of the utility model Figure 2 ;

[0025] Figure 5 This is the main view of a hose pre-compression structure of the utility model Figure 3 ;

[0026] Figure 6 It is a three-dimensional diagram of another hose pre-compression structure of the utility model;

[0027] Figure 7 It is a three-dimensional structural cross-sectional view of another hose pre-compression structure of the utility model;

[0028] Figure 8 The utility model is an exploded view of a pressure block and a dial button in another hose pre-pressing structure.

[0029] Reference numerals

[0030] 1-housing; 11-first limiting wall; 12-second limiting wall; 13-slideway; 2-roller; 21-rotating disk; 22-pressure roller; 3-hose; 4-pressure block; 41-pressing surface; 42-side wall; 43-folding edge; 5-actuating member; 51-shift lever; 52-shift block; 53-shift button; 54-pressing portion; 55-elastic member; 6-stop block; 7-limiting member; 71-inclined surface. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] Reference Figures 1 to 8 As shown, the embodiment of the utility model provides a hose pre-pressing structure for an endoscope flushing pump, comprising: a housing 1; a roller 2, rotatably mounted on the housing 1; a hose 3, at least partially wrapped around the roller 2 along the circumference of the roller 2; a pressure block 4, mounted on the housing 1, and capable of displacement between a first position and a second position relative to the hose 3. In some practical applications, the roller 2 is configured as two coaxial rotating disks 21 and a plurality of pressure rollers 22, the two rotating disks 21 are rotatably connected to the housing 1 through a rotating shaft and driven to rotate by power, and the plurality of pressure rollers 22 are distributed in an annular manner between the two rotating disks 21 with the rotating shaft of the rotating disk 21 as the center of the circle at equal intervals, and are all rotatably connected to the rotating disk 21. Specifically, the two ends of the pressure roller 22 are rotatably connected to the two rotating disks 21, and the rotating shaft of the pressure roller 22 is arranged parallel to the rotating shaft of the rotating disk 21. That is, the pressure roller 22 can rotate around its own axis, or it can rotate with the rotating disk 21.

[0034] The overall structure of the endoscope flushing pump (usually a peristaltic pump) is as follows Figure 1 As shown, the hose pre-compression structure is arranged in the housing 1 of the flushing pump.

[0035] In some practical applications, the flushing pump has an intermittent flushing mode: flushing is performed at a certain time interval, and the interval time can be flexibly adjusted according to actual needs. In some cases, flushing liquid can be saved and basic flushing requirements can be met. In this case, the rotating disk 21 is driven by power to rotate, so that the multiple pressure rollers 22 rotate together, and the multiple pressure rollers 22 intermittently contact the hose 3 and squeeze the hose 3. Intermittent flushing can be achieved by peristalsis. By controlling the rotation speed of the rotating disk 21, the intermittent flushing interval of the hose 3 can be adjusted.

[0036] The utility model can change the position of the pressing block 4 so that the pressing block can be transformed between the first position and the second position. When the pressing block is in the first position, the hose 3 is at least partially compressed between the roller 2 and the pressing block 4. At this time, the rotation of the rotating disk 21 drives multiple pressing rollers 22 to intermittently squeeze the hose, so that intermittent water discharge of the hose 3 can be achieved; when in the second position, the part of the hose 3 corresponding to the pressing block 4 is not compressed. In this state, the hose 3 can be pulled arbitrarily, which is convenient for the staff to replace or install the hose 3. In addition, when it is not needed, the pressing block 4 can be moved to the second position to avoid the hose 3 being squeezed by the pressing block 4 and the roller 2 during the non-working stage. To a certain extent, the service life of the hose 3 can be extended, and the consumables cost of the endoscope flushing pump is significantly reduced.

[0037] Specifically, Figure 2 , Figures 6 to 8 As shown, the pressing block 4 has a substantially arc-shaped pressing surface 41 on one side facing the hose 3, and the curvature of the pressing surface 41 is the same or substantially the same as the curvature of the roller 2 (a plurality of pressing rollers 22 are installed between the two rotating disks 21, and rotate with the rotating disks 21, so the curvature of the roller 2 is the curvature of the rotating disk 21; similarly, the center of the circle of the roller 2 described below is the center of the circle of the rotating disk 21). When in the first position, the center of the circle corresponding to the pressing surface 41 overlaps with the center of the circle of the roller 2, so that during the rotation of the roller 2, the squeezing force of the pressing roller 22 on each part of the hose 3 remains constant or substantially constant, thereby ensuring the service life of the hose 3. In some practical applications, the central angle corresponding to the pressing surface 41 is 45-120 degrees. In other practical applications, a side wall 42 is formed on at least one side of the pressing surface 41, and the side wall 42 is used to shield the hose 3, limit the hose 3, and prevent the hose 3 from falling off from the side end of the roller 2.

[0038] Specifically, Figure 2 , Figures 6 to 8As shown, one end of the pressing block 4 is rotatably mounted on the housing 1, and a folded edge 43 is formed on the other end; the hose pre-pressing structure also includes an actuator 5 that cooperates with the folded edge 43 and forces the pressing block 4 to move from the second position to the first position. The pressing block 4 is pushed to move by the actuator 5, so that the pressing block 4 squeezes and limits the hose 3, and the roller 2 contacts the hose 3 and has a certain squeezing force.

[0039] The actuator 5 may have various implementations in some practical applications:

[0040] One embodiment of the actuator 5 is as follows Figures 2 to 5 As shown, the actuating member 5 includes a lever 51 rotatably mounted on the housing 1 , and a shift block 52 disposed on the lever 51 and corresponding to the folded edge 43 so as to rotate with the lever 51 and thereby force the pressing block 4 to move from the second position to the first position.

[0041] Specifically, the pre-pressing structure of the hose 3 also includes: a stopper 6, which is arranged on the shell 1; when the pressing block 4 is in the second position, the free end of the pressing block 4 abuts against the stopper 6, and when the pressing block 4 is in the first position, the pressing block 4 is out of contact with the stopper 6; the stopper 6 is mainly provided to limit the rotation angle of the pressing block 4, so that the stopper 6 can only rotate within a set angle (i.e., between the first position and the second position), so as to avoid the pressing block 4 rotating at an excessively large angle, which causes the lever 51 to rotate and the shift block 52 to be unable to effectively drive the pressing block 4 to move.

[0042] By setting a limit member 7, the limit member 7 is set on the shell 1; when the pressure block 4 is in the first position, the limit member 7 abuts against the lever 51, preventing the lever 51 from rotating relative to the shell 1, thereby realizing the locking positioning of the pressure block 4 in the first position; the limit member 7 can be elastically connected to the shell 1 through a spring or other elastic member, the limit member 7 has a certain amount of activity margin, and inclined surfaces 71 are symmetrically provided on both sides of the end of the limit member 7. When the lever 51 rotates to the limit member 7, the lever 51 contacts the inclined surfaces 71 of the limit member 7, so that the limit member 7 retracts into the shell 1, and the lever 51 passes through the limit member 7 smoothly, and then the limit member 7 elastically resets to lock the lever 51; or the staff presses the limit member 7 to shrink the limit member 7, and after the lever 51 rotates to the locked position, the limit member 7 (the limit member 7 can refer to the mechanical principle of the button) pops out to lock the lever 51.

[0043] In this embodiment, the limiting member 7 is provided with two groups, which are respectively used to lock the two extreme positions of the lever 51. By moving the lever 51, the lever block 52 at the end of the lever 51 cooperates with the folded edge 43 at the end of the pressing block 4 to push the pressing block 4. Specifically, when the lever 51 is in the position as shown in FIG. Figure 2 , Figure 3In the position shown, the lever 51 is locked by the stopper 7 at the upper end of the housing 1. At this time, the free end of the pressure block 4 is against the stopper 6, and is in the second position, and the hose 3 is not pressed. The lever 51 is rotated counterclockwise, and the lever 51 contacts the inclined surface 71 of the upper stopper 7, so that the upper stopper 7 is retracted into the housing 1. The lever 51 smoothly passes through the upper stopper 7, and then the upper stopper 7 is elastically reset; continue to rotate the lever 51 counterclockwise until the block 52 contacts the folded edge 43 (as shown in FIG. Figure 4 Continue to rotate the lever 51 counterclockwise, the block 52 pushes the pressing block 4 to move to the first position (as shown); Figure 5 As shown), at this time, the lever 51 is at the limit piece 7 at the lower end and is locked, and the hose 3 is pressed between the pressing block 4 and the roller 2.

[0044] Another embodiment of the actuator 5 is as follows Figure 1 , Figures 6 to 8 As shown, the actuator 5 includes a dial button 53 slidably mounted on the housing 1, and a pressing portion 54 disposed on the dial button 53 and corresponding to the folded edge 43 so as to slide along with the dial button 53 and thereby force the pressing block 4 to move from the second position to the first position.

[0045] Specifically, the side walls of the shell 1 are respectively provided with a first limiting wall 11 and a second limiting wall 12, so that a slide groove 13 for the sliding of the button 53 is formed between the side wall of the shell 1, the first limiting wall 11 and the second limiting wall 12; the actuator 5 also includes an elastic member 55 arranged on the button 53; when the pressing block 4 is in the first position, the elastic member 55 abuts against the second limiting wall 12, preventing the button 53 from moving relative to the shell 1, thereby realizing the locking positioning of the pressing block 4 in the first position.

[0046] In this embodiment, the elastic member 55 is an elastic pick. When the knob 53 is in the lower limit position of the slide groove 13, the folded edge 43 of the pressure block 4 abuts against the top pressure portion 54 on the knob. At this time, the elastic member 55 abuts against the inner side surface of the second limiting wall 12; the staff pushes the knob 53 to rise, and the elastic member 55 rises with the knob 53. The end of the elastic member 55 detaches from the inner side surface of the second limiting wall 12 and pops out, and abuts against the top surface of the second limiting wall 12. The position of the knob 53 is locked, and in this process, the pressure block 4 is also moved to the first position under the push of the top pressure portion to achieve locking; in this embodiment, the locking of the pressure block 4 is achieved by pushing the knob 53.

[0047] In some preferred embodiments, a toggle portion (not shown in the figure) extending and penetrating to the outside of the shell 1 is provided on the outer side surface of the elastic member 55, and the toggle portion has a certain movable stroke. When the elastic member 55 is against the top surface of the second limiting wall 12 to lock the pressure block 4, the toggle knob 53 cannot reset itself. Therefore, the staff pulls or toggles the toggle portion to give a certain pulling force to the end of the elastic member 55, so that the end of the elastic member 55 is deformed and separated from the top surface of the second limiting wall 12 and is located on the inner side surface of the second limiting wall 12, so that the toggle knob 53 can be reset, and the pressure block 4 is also moved to the second position, and no longer squeezes the hose 3, which is beneficial to improve the service life of the hose 3.

[0048] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A hose pre-compression structure for an endoscope flushing pump, characterized in that: include: Housing (1); A roller (2) rotatably mounted on the housing (1); A hose (3) at least partially surrounds the roller (2) along the circumference of the roller (2); The pressure block (4) is mounted on the housing (1) and is capable of being displaced relative to the hose (3) between a first position and a second position; in the first position, the hose (3) is at least partially compressed between the roller (2) and the pressure block (4); in the second position, the portion of the hose (3) corresponding to the pressure block (4) is not compressed.

2. The hose pre-compression structure for an endoscope flushing pump according to claim 1, characterized in that: A substantially arc-shaped pressing surface (41) is provided on the side of the pressing block (4) facing the hose (3), and the curvature of the pressing surface is the same as or substantially the same as the curvature of the roller (2).

3. The hose pre-compression structure for an endoscope flushing pump according to claim 2, characterized in that: When in the first position, the center of a circle corresponding to the pressing surface (41) overlaps with the center of a circle of the roller (2).

4. The hose pre-compression structure for an endoscope flushing pump according to claim 2, characterized in that: A side wall (42) is formed on at least one side of the pressing surface (41).

5. The hose pre-compression structure for an endoscope flushing pump according to claim 1, characterized in that: One end of the pressing block (4) is rotatably mounted on the housing (1), and the other end is formed with a folded edge (43).

6. The hose pre-compression structure for an endoscope flushing pump according to claim 5, characterized in that: The hose pre-pressing structure further comprises an actuating member (5) which cooperates with the folded edge (43) and forces the pressing block (4) to move from the second position to the first position.

7. The hose pre-compression structure for an endoscope flushing pump according to claim 6, characterized in that: The actuating member (5) comprises a lever (51) rotatably mounted on the housing (1), and a shift block (52) arranged on the lever (51) and corresponding to the folded edge (43) so as to rotate with the lever (51) and thereby force the pressing block (4) to move from the second position to the first position.

8. The hose pre-compression structure for an endoscope flushing pump according to claim 7, characterized in that: The hose pre-compression structure further comprises: a stopper (6) disposed on the housing (1); when the pressing block (4) is in the second position, the free end of the pressing block (4) abuts against the stopper (6); when the pressing block (4) is in the first position, the pressing block (4) is out of contact with the stopper (6); A limiting member (7) is arranged on the housing (1); when the pressing block (4) is at the first position, the limiting member (7) abuts against the shifting rod (51), preventing the shifting rod (51) from rotating relative to the housing (1), thereby achieving locking and positioning of the pressing block (4) at the first position.

9. The hose pre-compression structure for an endoscope flushing pump according to claim 6, characterized in that: The actuating member (5) comprises a dial button (53) slidably mounted on the housing (1), and a pressing portion (54) arranged on the dial button (53) and corresponding to the folded edge (43) so as to slide along with the dial button (53) and thereby force the pressing block (4) to move from the second position to the first position.

10. The hose pre-compression structure for an endoscope flushing pump according to claim 9, characterized in that: The side walls of the housing (1) are respectively provided with a first limiting wall (11) and a second limiting wall (12), thereby forming a slide groove (13) for the sliding of the dial button (53); the actuating member (5) further comprises an elastic member (55) arranged on the dial button (53); when the pressing block (4) is in the first position, the elastic member (55) abuts against the second limiting wall (12), preventing the dial button (53) from moving relative to the housing (1), thereby achieving locking and positioning of the pressing block (4) in the first position.

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