Water injection device

Abstract

The utility model discloses a water injection device, and relates to the technical field of medical instruments, the water injection device comprises a water injection cylinder, a pressure applying assembly and a pressing assembly, and a push injection screw is arranged in the water injection cylinder; the pressing assembly comprises a sleeve integrated with the water injection cylinder, the sleeve is provided with a channel hole for the injection screw to extend out, the sleeve is provided with at least one pair of elastic pressing plates capable of being close to and away from the axis of the sleeve in the radial direction, and the sides, facing the axis of the sleeve, of the elastic pressing plates are provided with threads matched with the injection screw; the pressing assembly comprises a pressing plate, one end of the pressing plate is hinged to the outer wall of the sleeve, a pressing head is integrally formed on the surface of the side, facing the sleeve, of the pressing plate, and the pressing head abuts against the elastic pressing plate so that the other end of the pressing plate can tilt towards the side away from the outer wall of the sleeve. The water injection speed can be controlled, the water injection amount can be accurately controlled through the thread rotating process, and therefore the practicability and convenience of the water injection device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a water injection device. Background Art

[0002] Water injection is a common procedure during medical procedures, used for flushing or expanding instruments during surgery. However, existing water injection devices are often implemented using syringes or pressure pumps, and the injection process is performed by medical personnel through push injection. This process is often based on experience, making it difficult to control the injection speed. This is especially true when expanding instruments during surgery, where the amount of water injected needs to be carefully controlled as the procedure progresses. The pressure pump, while capable of controlling the injection speed, is relatively expensive. Utility Model Content

[0003] The main purpose of this application is to provide a water injection device to solve the above-mentioned problems in the prior art.

[0004] The technical solutions adopted in this application are as follows:

[0005] A water injection device, comprising:

[0006] A water injection cylinder, wherein a push screw is provided in the water injection cylinder;

[0007] A pressure assembly, the pressure assembly comprising a sleeve integral with the water injection barrel, the sleeve being provided with a passage hole for the extension of the injection screw, the sleeve being provided with at least one pair of elastic pressure plates radially arranged to be able to approach and move away from the sleeve axis, the elastic pressure plates being provided with threads matching the injection screw on the side facing the sleeve axis;

[0008] A pressing assembly includes a pressing plate with one end hinged to the outer wall of the sleeve, and a pressing head is integrally formed on the surface of the pressing plate facing the sleeve. The pressing head abuts against the elastic pressure plate so that the other end of the pressing plate is tilted away from the outer wall of the sleeve.

[0009] Optionally, the elastic pressure plate includes a plate body, the side of the plate body facing the channel hole is an arc surface adapted to the channel hole, side plates are provided on both sides of the plate body, and elastic parts that extend and retract along the radial direction of the sleeve are connected to the side plates.

[0010] Optionally, the sleeve is provided with a guide hole along the radial direction for the plate body to move, and limiting side grooves for one end of the side plate are provided on both sides of the guide hole, and the elastic member is provided in the limiting side groove.

[0011] Optionally, the elastic member includes a spring and a guide post, the guide post is fixed in the limiting side groove, one end of the spring is sleeved on the guide post and the other end is fixedly connected to the side plate.

[0012] Optionally, a buckle is provided on the raised end of the pressing plate facing the outer wall of the sleeve, and a slot matching the buckle is provided on the outer wall of the sleeve.

[0013] Optionally, a piston is provided at one end of the push screw located in the water injection cylinder, and a handle is provided at the other end of the push screw.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] A water injection device proposed in an embodiment of the present application includes a pressing component and a pressure component. When the pressing component is not pressed hard, the elastic pressure plate in the pressure component is not in contact with the injection screw. At this time, the injection screw can be controlled to be injected quickly. When the pressure component is pressed hard, the elastic pressure plate in the pressure component forms a threaded engagement with the injection screw, so that water can only be injected by rotating the injection screw. The water injection speed can be controlled, and the progress of thread rotation can accurately control the water injection amount, which helps to improve the practicality and convenience of the water injection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the water injection device provided in an embodiment of the present application from one viewing angle;

[0017] Figure 2 A schematic diagram of the structure of the water injection device provided in an embodiment of the present application from another perspective

[0018] Figure 3 A partial cross-sectional schematic diagram of a water injection device provided in an embodiment of the present application at one viewing angle;

[0019] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0020] Description of the reference numerals in the accompanying drawings:

[0021] 1-water injection cylinder, 2-water injection pipe, 3-injection screw, 4-thread, 5-handle, 6-pressure assembly, 601-sleeve, 602-guide hole, 603-limiting side groove, 604-plate body, 605-side plate, 606-spring, 607-guide column, 7-pressing assembly, 701-pressing plate, 702-pressing head, 8-buckle, 9-slot, 10-electronic pressure gauge. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In this application, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0026] Refer to the attached Figures 1 to 3 As shown, the embodiment of the present application provides a water injection device, including a water injection barrel 1, a pressure component 6 and a pressing component 7. Among them, the front end of the water injection barrel 1 is connected to the water injection pipe 2, and the interior of the water injection barrel 1 is provided with a push screw 3, the front end of the push screw 3 is provided with a piston, and the rear end of the push screw 3 is provided with a handle 5. By operating the push screw 3, the water injection operation of the water injection device can be realized.

[0027] In this embodiment, see Figure 3As shown, the pressure assembly 6 includes a sleeve 601 and an elastic pressure plate. The sleeve 601 is integrally formed at the rear end of the water injection barrel 1. The sleeve 601 is axially provided with a passage hole for the injection screw 3 to extend. The inner diameter of the passage hole is slightly larger than the outer diameter of the injection screw 3, so that the injection screw 3 can be freely withdrawn along the sleeve 601. The sleeve 601 is radially provided with at least one pair of guide holes 602. The side walls of the guide holes 602 are also provided with limiting side grooves 603 extending radially along the sleeve 601. The guide holes 602 are provided through, while the limiting side grooves 603 are closed on both sides. The elastic pressure plate includes a plate body 604 and an elastic member. Side plates 605 are integrally formed on both sides of the plate body 604. The plate body 604 is provided to slide in the guide holes 602, and the side plates 605 are provided to slide in the limiting side grooves 603. The elastic member includes a spring 606 and a guide post 607. One end of the guide post 607 is positioned in the side limit groove 603, near the channel hole. The other end of the guide post 607 fits over the spring 606. The end of the spring 606, away from the guide post 607, is fixed to the side plate 605. Furthermore, the side of the plate 604 facing the channel hole is a circular arc surface that matches the channel hole. The surface of this arc surface is provided with threads 4 that mate with the injection screw 3. In its natural state, the plate 604 does not contact the injection screw 3.

[0028] See above Figure 1 As shown, the pressing assembly 7 includes a pressing plate 701, one end of which is hinged to the outer wall of the sleeve 601. A pressing head 702 is integrally formed on the surface of the pressing plate 701 facing the sleeve 601. The pressing head 702 protrudes toward the side of the plate body 604, and the pressing head 702 always remains in contact with the plate body 604, so that the other end of the pressing plate 701 is tilted toward the side away from the outer wall of the sleeve 601.

[0029] Based on the above content, it is not difficult to understand that the working principle or usage method of a water injection device provided in the embodiment of the present application is:

[0030] When rapid water injection is required, no pressure is applied to the pressing assembly 7. At this time, the plate body 604 of the elastic pressure plate does not contact the injection screw 3, and the injection screw 3 and the sleeve 601 are in a sliding connection state. Pushing the injection screw 3 can achieve rapid water injection; when the water injection speed needs to be reduced, the pressing plate 701 is pressed by hand, and the pressing plate 701 approaches the sleeve surface. The pressing head 702 applies pressure to the plate body 604 of the elastic pressure plate, so that the plate body 604 moves toward the inside of the sleeve 601, and the inner arc surface of the plate body 604 completes the engagement of the thread 4 with the injection screw 3. At this time, the injection screw 3 cannot be pushed quickly, and water injection can only be completed by rotating the injection screw 3, which can reduce the water injection speed, and the water injection amount can be accurately controlled through the thread 4. When the water needs to be pumped out, the pressing plate 701 is released, and the spring 606 pushes the plate body 604 outward, thereby lifting the pressing plate 701. The plate body 604 is separated from the push rod stud, and the water can be quickly pumped out, which is very convenient.

[0031] Of course, in a preferred embodiment, in order to save effort when pressing the pressing plate 701 to rotate the injection screw 3, see Figure 1 and Figure 4 As shown, the raised end of the pressing plate 701 is provided with a latch 8 facing the outer wall of the sleeve 601, and the outer wall of the sleeve 601 is provided with a slot 9 corresponding to the latch 8. As can be imagined, when the pressing plate 701 is lowered toward the sleeve 601, the latch 8 is inserted into the slot 9 and locked, eliminating the need to continuously apply force to the pressing plate 701, thereby achieving the purpose of saving effort.

[0032] Furthermore, in an exemplary embodiment, Figure 2 As shown, the front end of the water injection cylinder 1 is provided with an electronic pressure gauge 10 connected to the inner cavity of the water injection cylinder 1. The electronic pressure gauge 10 facilitates accurate reading of the pressure value. The electronic pressure gauge 10 includes a core board and a pressure sensor chip provided on the back of the core board and electrically connected to the core board. The pressure sensor chip measures more accurately than a ceramic pressure sensor.

[0033] To sum up, the embodiment of the present application provides a water injection device, which uses a pressing component 7 and a pressure component 6. When the pressing component 7 is not pressed hard, the elastic pressure plate in the pressure component 6 is not in contact with the injection screw 3. At this time, the injection screw 3 can be controlled to be injected quickly. When the pressure component 6 is pressed hard, the elastic pressure plate in the pressure component 6 forms a thread 4 that engages with the injection screw 3, so that water can only be injected by rotating the injection screw 3. The water injection speed can be controlled, and the rotation process of the thread 4 can accurately control the water injection amount, which helps to improve the practicality and convenience of the water injection device.

[0034] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A water injection device, characterized in that: include: A water injection cylinder, wherein a push screw is provided in the water injection cylinder, a piston is provided at one end of the push screw located in the water injection cylinder, and a handle is provided at the other end of the push screw; A pressure assembly, the pressure assembly comprising a sleeve integral with the water injection barrel, the sleeve being provided with a passage hole for the extension of the injection screw, the sleeve being provided with at least one pair of elastic pressure plates radially arranged to be able to approach and move away from the sleeve axis, the elastic pressure plates being provided with threads matching the injection screw on the side facing the sleeve axis; A pressing assembly includes a pressing plate with one end hinged to the outer wall of the sleeve, and a pressing head is integrally formed on the surface of the pressing plate facing the sleeve. The pressing head abuts against the elastic pressure plate so that the other end of the pressing plate is tilted away from the outer wall of the sleeve.

2. The water injection device according to claim 1, characterized in that The elastic pressure plate includes a plate body, the side of the plate body facing the channel hole is an arc surface adapted to the channel hole, side plates are provided on both sides of the plate body, and elastic members that expand and contract along the radial direction of the sleeve are connected to the side plates.

3. The water injection device according to claim 2, characterized in that: The sleeve is provided with a guide hole for the plate body to move in the radial direction, and both sides of the guide hole are provided with a limiting side groove for one end of the side plate, and the elastic member is arranged in the limiting side groove.

4. The water injection device according to claim 3, characterized in that: The elastic member includes a spring and a guide post. The guide post is fixed in the limiting side groove. One end of the spring is sleeved on the guide post and the other end is fixedly connected to the side plate.

5. The water injection device according to claim 1, characterized in that: One end of the pressing plate that is tilted up is provided with a buckle facing one side of the outer wall of the sleeve, and the outer wall of the sleeve is provided with a slot that matches the buckle.

6. The water injection device according to claim 1, characterized in that: The front end of the water injection cylinder is provided with an electronic pressure gauge which is in communication with the water injection cylinder.

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