A knee joint effusion pressure detection device

Abstract

This invention discloses a knee joint cavity effusion pressure detection device, including an adapter tube and a pressure measuring component. A puncture needle is attached to the outside of the adapter tube. The pressure measuring component includes a column connected to the top of the adapter tube, a guide groove on the column, a sliding shaft slidably mounted in the guide groove, and limit plates connected to both ends of the sliding shaft. A connecting sleeve is rotatably mounted on one side of any limit plate. An elastic band is connected to the outside of the connecting sleeve, and a strap is connected to the free end of the elastic band. A pressure gauge is connected to the side wall of the adapter tube through a first outlet tube. The pressure measuring component in this invention can measure the effusion pressure in the patient's knee joint cavity after puncture. At the same time, the strap can fix the position of the puncture needle in the adapter tube, thereby maintaining the stability of the effusion cavity pressure during pressure measurement after puncture. When it is necessary to measure the pressure in the effusion cavity, puncture is first performed through the puncture needle, and then the strap connected to the free end of the elastic band is tied to the outside of the patient's patella. The pressure gauge reading can be observed to measure the pressure in the patient's knee joint cavity.

Description

Technical Field

[0001] This invention relates to the field of pressure detection technology, and more specifically, to a device for detecting pressure in the knee joint cavity effusion. Background Technology

[0002] Knee joint effusion refers to a pathological condition in which the synovium of the knee joint secretes abnormally more fluid after being stimulated, causing fluid to accumulate in the joint cavity. It is a common sign in orthopedics and sports medicine. Common causes of knee joint effusion mainly include trauma, inflammation, and degenerative strain. Depending on the cause, knee joint effusion can be classified into different types, including serous, hemorrhagic, and purulent types. When there is a large amount of effusion, active drainage is required to alleviate its impact.

[0003] However, most existing knee joint effusion pressure detection devices lack the combined functions of effusion aspiration and drug injection. Medical staff need to perform repeated punctures to aspirate effusion and test pressure, which increases the risk of knee joint infection in patients. Summary of the Invention

[0004] This invention provides a knee joint effusion pressure detection device to solve the problem that most existing knee joint effusion pressure detection devices lack the combined function of effusion aspiration and drug injection, requiring medical staff to perform repeated punctures to aspirate effusion and detect pressure.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A knee joint effusion pressure detection device includes an adapter tube and a pressure measuring component. A puncture needle is attached to the outer side of the adapter tube. The pressure measuring component includes a column connected to the top of the adapter tube. A guide groove is formed on the column. A sliding shaft is slidably engaged in the guide groove. Limiting plates are connected to both ends of the sliding shaft. A connecting sleeve is rotatably engaged on one side of any of the limiting plates. An elastic band is connected to the outer side of the connecting sleeve. A binding strap is connected to the free end of the elastic band. A pressure gauge is connected to the side wall of the adapter tube through a first outlet tube.

[0007] Preferably, a connecting shaft is provided at the top of the column, a guide wheel is rotatably mounted on the connecting shaft, a traction rope is connected to the outside of the sliding shaft, the traction rope is mounted on the outside of the guide wheel, a winder is provided on the outside of the column, and the free end of the traction rope is connected to the output end of the winder.

[0008] Preferably, one end of the strap is rotatably secured to a frame, and the outer side of the free end of the strap is provided with a Velcro surface and a needle surface, and the free end of the strap is wrapped around the outer side of the frame.

[0009] Preferably, the top of the adapter cylinder has a fixing hole, the bottom of the fixing hole is rotatably clamped to the rotating cylinder, the side wall of the rotating cylinder has a first liquid guiding hole and a second liquid guiding hole, the first liquid guiding hole and the second liquid guiding hole are connected, and the angle between the axes of the first liquid guiding hole and the second liquid guiding hole is 120 degrees.

[0010] Preferably, a drive button is eccentrically connected to one end of the rotating drum, a connecting frame is connected to the top of the adapter drum, a screw is rotatably locked inside the connecting frame, a knob is coaxially connected to both ends of the screw, a drive block is screwed onto the screw, a control frame is connected to one side of the drive block, and the control frame is sleeved on the outside of the drive button.

[0011] Preferably, the top of the adapter tube has a pair of grooves, and the two knobs are respectively locked in the two grooves. When the drive block is located at both ends of the connecting frame, the puncture needle is connected to the first outlet tube or the liquid guide clamp respectively.

[0012] Preferably, a liquid guide clamp is provided on the outside of the adapter tube, and the included angle between the liquid guide clamp, the first outlet tube and the puncture needle is 120 degrees. A rotating ring is rotatably clamped inside the liquid guide clamp, and an injection tube is connected to the outside of the rotating ring. The rotating ring is in communication with the liquid guide clamp.

[0013] Preferably, both the rotating drum and the adapter drum have connection holes at their bottom ends, the two connection holes are aligned vertically, the connection hole at the bottom end of the rotating drum is connected to both the first liquid guide hole and the second liquid guide hole, and a one-way valve is connected to the bottom end of the adapter drum.

[0014] Preferably, the output end of the one-way valve is connected to a connector, and a first inlet pipe and a second inlet pipe are connected to the outside of the connector. The free end of the first inlet pipe is threaded on the inside, and a sealing cap is provided on the free end of the first inlet pipe.

[0015] Preferably, the free end of the second inlet tube is provided with a conical cylinder, and the free end of the conical cylinder is connected to an injection tube. Both the conical cylinder and the injection tube are made of elastic material.

[0016] The principle and beneficial effects of this technical solution:

[0017] (1) The pressure measuring component in this invention can measure the pressure of the effusion in the patient's knee joint cavity after puncture. At the same time, it can fix the position of the puncture needle with the adapter tube in conjunction with the strap, thereby maintaining the pressure of the effusion cavity during pressure measurement after puncture. When it is necessary to measure the pressure in the effusion cavity, puncture is first performed through the puncture needle, and then the strap connected to the free end of the elastic band is tied to the outside of the patient's patella. The pressure of the strap is adjusted by the Velcro surface and the needle surface on the outside of the strap, so that the strap is pressed tightly against the outside of the patient's patella. Then, the winding device is activated according to the position of the puncture needle to wind up the strap. As the traction rope connected to the output end of the device gradually retracts into the retractor, the traction rope moves along the guide wheel that is rotated and locked on the connecting shaft. The traction rope pulls the sliding shaft connected to one end of it to slide along the guide groove. The connecting sleeve connected to the sliding shaft through the limiting plate moves synchronously. The elastic band connected to the outside of the connecting sleeve also gradually tightens until the elastic band is taut, which can fix the position of the puncture needle. At this time, adjust the direction of the rotating cylinder that is rotated and locked inside the adapter cylinder so that the first fluid guide hole and the second fluid guide hole are connected to the puncture needle and the first outlet tube, respectively. Then, observe the pressure gauge reading to measure the pressure inside the patient's knee joint cavity.

[0018] (2) The rotating drum in this invention can adjust the working state of the device, so that the device can simultaneously perform pressure measurement and drug injection functions. When the device needs to be changed from pressure measurement to drug injection, turn any knob, and the knob will drive the screw to rotate, causing the drive block screwed on the screw to move. The drive block will move synchronously with the control frame. During the movement of the control frame, it will push the drive knob to move, causing the rotating drum where the drive knob is located to rotate until the first liquid guide hole and the second liquid guide hole opened on the rotating drum are connected to the puncture needle and the liquid guide clamp respectively. At this time, medical staff can inject drugs through the injection tubing. Rotate the rotating ring according to the angle that is convenient for injection. After the drug is injected, the liquid guide clamp will guide the drug that enters the rotating ring through the injection tubing into the puncture needle for drug injection.

[0019] (3) The one-way valve in this invention can drain the joint cavity fluid that enters the adapter tube through the puncture needle. At the same time, according to the discharge stage of the joint cavity fluid, a first inlet pipe and a second inlet pipe are set for automatic external discharge and active extraction of the fluid. When the device is needed to drain the fluid, first open the sealing cap on the free end of the first inlet pipe, and then thread the drain pipe inside the free end of the first inlet pipe. At this time, open the one-way valve, and the joint cavity fluid will enter the first inlet pipe under the action of internal pressure and be automatically discharged to the outside of the device through the first inlet pipe.

[0020] After some of the effusion is drained, the pressure inside the patient's joint cavity decreases. At this point, medical staff can connect the syringe to the injection tube through the conical tube and pull the syringe piston to actively aspirate the effusion in the patient's joint cavity. Medical staff can manually squeeze around the patient's joint cavity to improve the efficiency of the device in draining the effusion. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of the present invention;

[0023] Figure 3 for Figure 2 Enlarged structural diagram of region A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of some components after being cut apart in this invention;

[0025] The reference numerals in the accompanying drawings of the instruction manual include: 1. Winding device; 2. First inlet tube; 3. Connector; 4. Puncture needle; 5. One-way valve; 6. Second inlet tube; 7. Guide wheel; 8. Connecting shaft; 9. Sealing cap; 11. Elastic band; 12. Strap; 13. Clip frame; 14. Injection tube; 15. Conical cylinder; 16. Drive block; 17. Guide groove; 18. Column; 19. Knob; 20. Screw; 21. Fixing hole; 22. First outlet tube; 23. Connecting frame; 24. Adapter cylinder; 25. Liquid guide clamp; 26. Traction rope; 27. Connecting sleeve; 28. Limiting plate; 29. ​​Control frame; 30. First liquid guide hole; 31. Rotary cylinder; 32. Drive button; 33. Second liquid guide hole; 34. Injection tubing; 35. Rotary ring; 36. Pressure gauge. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0027] Example:

[0028] like Figures 1 to 4 As shown, the present invention provides a knee joint cavity effusion pressure detection device, including an adapter cylinder 24 and a pressure measuring component. A puncture needle 4 is connected to the outside of the adapter cylinder 24. The pressure measuring component includes a column 18 connected to the top of the adapter cylinder 24. A guide groove 17 is provided on the column 18. A sliding shaft is slidably locked in the guide groove 17. Limiting plates 28 are connected to both ends of the sliding shaft. A connecting sleeve 27 is rotatably locked on one side of any limiting plate 28. An elastic band 11 is connected to the outside of the connecting sleeve 27. A binding strap 12 is connected to the free end of the elastic band 11. A pressure gauge 36 is connected to the side wall of the adapter cylinder 24 through a first outlet tube 22.

[0029] like Figures 1 to 3 As shown, a connecting shaft 8 is provided at the top of the column 18, and a guide wheel 7 is rotatably mounted on the connecting shaft 8. A traction rope 26 is connected to the outside of the sliding shaft and is mounted on the outside of the guide wheel 7. A winder 1 is provided on the outside of the column 18, and the free end of the traction rope 26 is connected to the output end of the winder 1.

[0030] like Figure 2 As shown, one end of the strap 12 is rotatably secured to a frame 13, and the outer side of the free end of the strap 12 is provided with a Velcro surface and a needle surface, and the free end of the strap 12 is wrapped around the outside of the frame 13.

[0031] like Figure 3 As shown, the top of the adapter cylinder 24 is provided with a fixing hole 21, and the bottom of the fixing hole 21 is rotatably secured with a rotating cylinder 31. The side wall of the rotating cylinder 31 is provided with a first liquid guiding hole 30 and a second liquid guiding hole 33. The first liquid guiding hole 30 and the second liquid guiding hole 33 are connected, and the angle between the axes of the first liquid guiding hole 30 and the second liquid guiding hole 33 is 120 degrees.

[0032] like Figure 3 As shown, a drive button 32 is eccentrically connected to one end of the rotating drum 31, and a connecting frame 23 is connected to the top of the adapter drum 24. A screw 20 is rotatably locked inside the connecting frame 23. A knob 19 is coaxially connected to both ends of the screw 20. A drive block 16 is screwed onto the screw 20. A control frame 29 is connected to one side of the drive block 16. The control frame 29 is sleeved on the outside of the drive button 32.

[0033] like Figure 1 and Figure 3 As shown, the top of the adapter tube 24 has a pair of grooves, and two knobs 19 are respectively locked in the two grooves. When the drive block 16 is located at both ends of the connecting frame 23, the puncture needle 4 is connected to the first outlet tube 22 or the liquid guide clamp 25 respectively.

[0034] like Figure 1 and Figure 3 As shown, a liquid guide clamp 25 is attached to the outside of the adapter tube 24. The included angle between the liquid guide clamp 25, the first outlet tube 22 and the puncture needle 4 is 120 degrees. A rotating ring 35 is rotatably clamped inside the liquid guide clamp 25. An injection tubing 34 is connected to the outside of the rotating ring 35. The rotating ring 35 is connected to the liquid guide clamp 25.

[0035] The rotating drum 31 can adjust the working state of the device, enabling it to simultaneously perform pressure measurement and drug injection functions. When the device needs to be switched from pressure measurement to drug injection, rotating any knob 19 will cause the screw 20 to rotate, moving the drive block 16 screwed onto the screw 20. The drive block 16 will then move synchronously with the control frame 29. During the movement of the control frame 29, it will push the drive knob 32 to move, causing the rotating drum 31, where the drive knob 32 is located, to rotate until the first liquid guide hole 30 and the second liquid guide hole 33 on the rotating drum 31 are connected to the puncture needle 4 and the liquid guide clamp 25, respectively. At this time, medical personnel can inject drugs through the injection tubing 34. The rotating ring 35 is rotated at an angle convenient for injection. After the drug is injected, the liquid guide clamp 25 guides the drug that has entered the rotating ring 35 through the injection tubing 34 into the puncture needle 4 for drug injection.

[0036] like Figure 1 and Figure 3 As shown, both the rotating drum 31 and the adapter drum 24 have connection holes at their bottom ends. The two connection holes are aligned vertically. The connection hole at the bottom end of the rotating drum 31 is connected to both the first liquid guide hole 30 and the second liquid guide hole 33. A one-way valve 5 is connected to the bottom end of the adapter drum 24.

[0037] like Figure 1 and Figure 2 As shown, the output end of the one-way valve 5 is connected to a connector 3. The first inlet pipe 2 and the second inlet pipe 6 are connected to the outside of the connector 3. The free end of the first inlet pipe 2 is threaded on the inside, and the free end of the first inlet pipe 2 is covered with a sealing cap 9.

[0038] like Figure 1 and Figure 2 As shown, a conical tube 15 is provided at the free end of the second liquid inlet tube 6, and an injection tube 14 is connected to the free end of the conical tube 15. Both the conical tube 15 and the injection tube 14 are made of elastic material.

[0039] The one-way valve 5 can drain the joint cavity effusion that enters the adapter tube 24 through the puncture needle 4. At the same time, according to the drainage stage of the joint cavity effusion, the first inlet pipe 2 and the second inlet pipe 6 are set for automatic drainage and active extraction of the effusion. When the device is needed to drain the effusion, first open the sealing cap 9 on the free end of the first inlet pipe 2, and then thread the drainage pipe inside the free end of the first inlet pipe 2. At this time, open the one-way valve 5, and the joint cavity effusion will enter the first inlet pipe 2 under the action of internal pressure and be automatically discharged to the outside of the device through the first inlet pipe 2.

[0040] After some of the effusion is drained, the pressure inside the patient's joint cavity decreases. At this point, medical staff can connect the syringe to the injection tube 14 through the conical tube 15 and pull the syringe piston to actively aspirate the effusion in the patient's joint cavity. Medical staff can manually squeeze around the patient's joint cavity to improve the efficiency of the device in draining the effusion.

[0041] The specific usage and function of this embodiment are as follows:

[0042] The pressure measuring component in this invention can measure the pressure of the effusion in the patient's knee joint cavity after puncture. Simultaneously, the strap 12, in conjunction with the adapter tube 24, can fix the position of the puncture needle 4, thereby maintaining the stability of the pressure in the effusion cavity during post-puncture pressure measurement. When it is necessary to measure the pressure in the effusion cavity, puncture is first performed through the puncture needle 4. Then, the strap 12, connected to the free end of the elastic band 11, is strapped to the lateral side of the patient's patella. The pressure of the strap 12 is adjusted by the Velcro surface and needle surface on the outer side of the strap 12, so that the strap 12 is pressed tightly against the lateral side of the patient's patella. Then, according to the position of the puncture needle 4, the retractor 1 is activated, causing the traction connected to the output end of the retractor 1 to... As the traction rope 26 is gradually drawn into the retractor 1, the traction rope 26 will move along the guide wheel 7 that is rotated and locked on the connecting shaft 8. The traction rope 26 will pull the sliding shaft connected to one end to slide along the guide groove 17. The connecting sleeve 27 that is rotated and connected to the sliding shaft through the limiting plate 28 will move synchronously. The elastic band 11 connected to the outside of the connecting sleeve 27 will also gradually tighten until the elastic band 11 is taut, which can fix the position of the puncture needle 4. At this time, adjust the direction of the rotating cylinder 31 that is rotated and locked in the adapter cylinder 24 so that the first fluid guide hole 30 and the second fluid guide hole 33 are connected to the puncture needle 4 and the first outlet tube 22 respectively. Then, observe the pressure gauge reading to determine the pressure inside the patient's knee joint cavity.

[0043] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A knee joint cavity effusion pressure detection device, characterized in that: The device includes an adapter tube (24) and a pressure measuring component. A puncture needle (4) is attached to the outside of the adapter tube (24). The pressure measuring component includes a column (18) connected to the top of the adapter tube (24). A guide groove (17) is provided on the column (18). A sliding shaft is slidably secured in the guide groove (17). Limit plates (28) are connected to both ends of the sliding shaft. A connecting sleeve (27) is rotatably secured on one side of any of the limit plates (28). An elastic band (11) is connected to the outside of the connecting sleeve (27). A strap (12) is connected to the free end of the elastic band (11). A pressure gauge (36) is connected to the side wall of the adapter tube (24) through a first outlet tube (22).

2. The knee joint cavity effusion pressure detection device according to claim 1, characterized in that: The top of the column (18) is provided with a connecting shaft (8), and a guide wheel (7) is rotatably mounted on the connecting shaft (8). A traction rope (26) is connected to the outside of the sliding shaft. The traction rope (26) is mounted on the outside of the guide wheel (7). A winder (1) is provided on the outside of the column (18). The free end of the traction rope (26) is connected to the output end of the winder (1).

3. The knee joint cavity effusion pressure detection device according to claim 2, characterized in that: One end of the strap (12) is rotatably secured to a frame (13). The free end of the strap (12) is provided with a Velcro surface and a needle surface. The free end of the strap (12) is wrapped around the outside of the frame (13).

4. The knee joint cavity effusion pressure detection device according to claim 3, characterized in that: The top of the adapter tube (24) is provided with a fixing hole (21), and the bottom of the fixing hole (21) is rotatably fitted with a rotating tube (31). The side wall of the rotating tube (31) is provided with a first liquid guiding hole (30) and a second liquid guiding hole (33). The first liquid guiding hole (30) and the second liquid guiding hole (33) are connected, and the angle between the axes of the first liquid guiding hole (30) and the second liquid guiding hole (33) is 120 degrees.

5. The knee joint cavity effusion pressure detection device according to claim 4, characterized in that: One end of the rotating drum (31) is eccentrically connected to a drive button (32), and the top end of the adapter drum (24) is connected to a connecting frame (23). A screw (20) is rotatably locked inside the connecting frame (23). Both ends of the screw (20) are coaxially connected to knobs (19). A drive block (16) is screwed onto the screw (20). A control frame (29) is connected to one side of the drive block (16). The control frame (29) is sleeved on the outside of the drive button (32).

6. The knee joint cavity effusion pressure detection device according to claim 5, characterized in that: The top of the adapter tube (24) has a pair of grooves, and the two knobs (19) are respectively locked in the two grooves. When the drive block (16) is located at both ends of the connecting frame (23), the puncture needle (4) is connected to the first outlet tube (22) or the liquid guide clamp (25) respectively.

7. The knee joint cavity effusion pressure detection device according to claim 6, characterized in that: The adapter tube (24) is provided with a liquid guide clamp (25) on the outside. The included angle between the liquid guide clamp (25), the first outlet tube (22) and the puncture needle (4) is 120 degrees. A rotating ring (35) is provided inside the liquid guide clamp (25). An injection tubing (34) is connected to the outside of the rotating ring (35). The rotating ring (35) is connected to the liquid guide clamp (25).

8. The knee joint cavity effusion pressure detection device according to claim 7, characterized in that: Both the rotating drum (31) and the adapter drum (24) have connection holes at their bottom ends. The two connection holes are aligned vertically. The connection hole at the bottom end of the rotating drum (31) is connected to both the first liquid guide hole (30) and the second liquid guide hole (33). A one-way valve (5) is connected to the bottom end of the adapter drum (24).

9. The knee joint cavity effusion pressure detection device according to claim 8, characterized in that: The output end of the one-way valve (5) is connected to a connector (3), and the outside of the connector (3) is simultaneously connected to a first inlet pipe (2) and a second inlet pipe (6). The free end of the first inlet pipe (2) is threaded, and the free end of the first inlet pipe (2) is covered with a sealing cap (9).

10. The knee joint cavity effusion pressure detection device according to claim 9, characterized in that: The free end of the second liquid inlet tube (6) is provided with a conical tube (15), and the free end of the conical tube (15) is connected to an injection tube (14). Both the conical tube (15) and the injection tube (14) are made of elastic material.

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