Tube drawing instrument

Abstract

The utility model provides a tube drawing instrument, and belongs to the technical field of medical instruments. The problem that an existing indwelling catheter is inconvenient to pull out is solved. The tube drawing instrument comprises a shell with a tubular inlet end, the top of the inlet end is rotatably connected with a rolling wheel, the bottom of the rolling wheel extends into the inlet end, and a cutter is vertically arranged at the top, close to an inlet, of the inlet end in a penetrating mode. A cutting edge of the cutter is located in the inlet end and can move towards the other side, relative to the cutter, of the inlet end, a receding notch is formed in the position, opposite to the cutter, of the bottom of the inlet end, a sliding part capable of shielding the receding notch is arranged at the position of the receding notch, and the sliding part is connected to the inlet end in an axial sliding mode. The sliding part can move to the position below the bottom face of the inlet end. The tube drawing instrument has the advantage of being convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments and relates to an extubation instrument. Background Art

[0002] There are many types of medical catheters, including urinary catheters, deep venous catheters, PICC tubes, CVC catheters, etc. These catheters require culture testing of the front end when they are placed or removed.

[0003] Currently, when removing these catheters, medical staff are required to wear gloves, take gauze, hold the outer end of the indwelling catheter and slowly pull it out. After the catheter is pulled out, hold it in your hand, take disposable scissors, and place a sterile cup. Use the disposable scissors to cut off the inner end of the indwelling catheter and let it fall into the sterile cup. Finally, the catheter in the cup is cultured and tested.

[0004] During the entire extubation process, the catheter needs to be slowly removed manually, and a variety of instruments are required. Each instrument is placed discretely, making the operation rather cumbersome and inconvenient. Utility Model Content

[0005] The utility model aims to solve the above problems existing in the prior art and proposes a tube removal device to solve the problem that the prior indwelling catheter removal operation is relatively inconvenient.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] The tube removal instrument is characterized in that the tube removal instrument includes a shell with a tubular inlet end, the top of the inlet end is rotatably connected to a roller, the bottom of the roller extends into the inlet end, a tool is vertically penetrated through the top of the inlet end near the inlet, the cutting edge of the tool is located in the inlet end and can move to the other side of the inlet end relative to the tool, the bottom of the inlet end is provided with a clearance gap opposite to the tool, the clearance gap is provided with a sliding part that can cover the clearance gap, the sliding part can be axially slidably connected to the inlet end, and the sliding part can move to below the bottom surface of the inlet end.

[0008] When the tube removal device is used, the outer end of the indwelling catheter is inserted into the shell from the inlet of the inlet end, so that the outer end of the indwelling catheter is pressed between the roller and the inner wall of the inlet end. The operator can hold the tubular inlet end and use the thumb to turn the roller to expose the top of the inlet end, so that the roller rotates circumferentially and pulls the indwelling catheter pressed between the roller and the inner wall of the inlet end to move into the shell. During the inward movement of the indwelling catheter, the sliding part always remains in a position below the bottom surface of the inlet end, so that the indwelling catheter only contacts the inner wall of the inlet end at the edge of the clearance gap. The indwelling catheter continues to move inward until the inner end of the catheter originally located in the human body moves to the bottom of the tool, then the roller is stopped from being turned, and the sliding part is axially slid in the inlet direction, so that the sliding part blocks the clearance gap and is fixed, that is, the sliding part is located below the indwelling catheter, and the tool is pressed down, so that the cutting edge at the bottom of the tool moves toward the sliding part until the indwelling catheter is cut off, so that the inner end of the indwelling catheter that needs to be cultured can be placed in a test tube or a cup for standby use.

[0009] During the removal process, the removal of the indwelling catheter is driven by the roller, and the removal process is slow and stable, which is easier to control than manual removal. The roller, the cutter, and the shell for accommodating the discarded indwelling catheter are integrated together for easy storage, carrying, and use. The sliding portion is located below the inlet end and can move axially back and forth, so that when the outer end of the indwelling catheter enters the inlet end, the sliding portion can be hidden below the inlet end and does not contact the indwelling catheter, thereby preventing the sliding portion from being contaminated by the outer end of the indwelling catheter and affecting the culture and test results. Only when the part of the indwelling catheter that needs to be cultured and tested moves to the clearance gap, the sliding portion is moved forward to provide support for the cutting and trimming of the cutter.

[0010] In the above-mentioned tube removal instrument, the bottom of the inlet end has a slot arranged along the axial direction of the inlet, and the sliding part is slidably connected in the slot. The axial reciprocating movement of the sliding part is achieved through the cooperation between the slot and the sliding part, and the movement is more convenient.

[0011] As another case, in the above-mentioned tube removal instrument, both sides of the inlet end have concave slide grooves, the two slide grooves are long strips and their length direction is consistent with the axial direction of the inlet, one end of the two slide grooves extends to the inlet of the inlet end, and the sliding part has a card block that can be correspondingly inserted into the two slide grooves. The two slide grooves cooperate with the slot to achieve multi-point support for the sliding part, ensure the stability of the sliding part after movement, and also ensure the stability of the tool when cutting the catheter.

[0012] In the above-mentioned tube removal instrument, the end of the sliding part facing the inlet direction has an operating part folded downwards. The folded operating part facilitates manual operation.

[0013] In the above-mentioned tube removal device, the end of the housing away from the inlet port has a storage portion, the storage portion has a cavity connected to the inner hole of the inlet port, and the end of the inlet port away from the inlet port is bent downward and connected to the storage portion. The storage portion is used to place the outer end portion of the indwelling catheter that needs to be discarded.

[0014] In the above-mentioned tube removal device, the tube removal device also includes a test tube, which is detachably connected to the bottom of the shell, and an end cap is provided at the open end of the test tube. The test tube is also integrated into the shell for easy carrying and storage, and the end cap can ensure the cleanliness of the test tube.

[0015] In the above-mentioned tube removal instrument, the bottom of the shell has a U-shaped clamp with an opening facing downward, and the test tube is clamped in the U-shaped clamp. The test tube is also connected to the bottom of the shell through a connecting rope. The U-shaped clamp is used to fix the test tube for easy access. The setting of the connecting rope can prevent the test tube from accidentally falling when it is taken out. After the test tube is connected to the catheter, the connecting rope can be torn or cut to facilitate the transfer of the test tube.

[0016] In the above-mentioned tube removal instrument, the outer side of the roller has a plurality of protruding teeth, and the plurality of teeth are evenly distributed on the outer side of the roller around the axis of the roller.

[0017] In the above-mentioned tube removal instrument, a return spring is sleeved on the cutter, one end of which abuts against the outside of the housing, and the other end abuts against the cutter. The setting of the return spring makes the cutter tend to move outward when in use, facilitating the insertion of the catheter.

[0018] Compared with the prior art, the present extubation device has the following advantages:

[0019] 1. During the process of extubation, the indwelling catheter is pulled out by the roller, and the removal process is slow and stable, which is more conducive to control than manual removal;

[0020] 2. The roller, cutter, test tube and the housing for accommodating the discarded indwelling catheter are integrated together, making it convenient to store, carry and use;

[0021] 3. The sliding part is located below the inlet end and can move axially back and forth, so that when the outer end of the indwelling catheter enters the inlet end, the sliding part can be hidden below the inlet end and does not contact the indwelling catheter, thereby preventing the sliding part from being contaminated by the outer end of the indwelling catheter and affecting the culture and test results. Only when the part of the indwelling catheter that needs to be cultured and tested moves to the gap, the sliding part is moved forward to provide support for the cutting and trimming of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the extubation instrument.

[0023] Figure 2 This is a reference diagram of the use status of the extubation instrument.

[0024] In the figure, 1. inlet end; 2. shell; 3. roller; 4. tool; 5. clearance gap; 6. sliding part; 7. slot; 8. operating part; 9. storage part; 10. test tube; 11. U-shaped clamp; 12. end cover; 13. connecting rope; 14. catheter. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1 As shown, the tube removal instrument includes a shell 2, the front end of the shell 2 is a circular tubular inlet end 1, the rear end of the shell 2 has a storage portion 9, the storage portion 9 has a cavity connected to the inner hole of the inlet end 1, and the rear end of the inlet end 1 is bent downward and connected to the storage portion 9.

[0027] A mounting opening is provided through the top of the middle section of the inlet end 1 of the housing 2. A rotating shaft is fixed horizontally in the housing 2 at the mounting opening. A ring-shaped roller 3 is sleeved on the outside of the rotating shaft, and the roller 3 can rotate circumferentially around the rotating shaft. The top of the roller 3 passes through the housing 2 from the mounting opening, and the bottom of the roller 3 extends into the inlet end 1 to form a clamping opening with the inner wall of the bottom of the inlet end 1. In this embodiment, the outer side of the roller 3 has a plurality of protruding teeth, and the plurality of teeth are evenly distributed on the outer side of the roller 3 around the axis of the roller 3.

[0028] A cutter 4 is vertically penetrated at the top of the front end of the inlet end 1 near the inlet, and the upper end of the cutter 4 passes through the housing 2. The cutting edge of the cutter 4 is located at the bottom of the cutter 4 and extends into the inlet end 1. The cutter 4 can move vertically toward the bottom of the inlet end 1 relative to the housing 2. In this embodiment, a return spring is provided on the outer sleeve of the cutter 4, one end of the return spring abuts against the outside of the housing 2, and the other end abuts against the cutter 4, so that the cutter 4 always has a tendency to move upward relative to the housing.

[0029] The bottom of the front end of the inlet end 1 is provided with a clearance gap 5 opposite to the tool 4. The clearance gap 5 is formed by a missing part of the bottom of the front end of the inlet end 1 and extends to the end of the front end of the inlet end 1. Correspondingly, a sliding portion 6 curved in a semicircular arc shape is also provided at the clearance gap 5, and the sliding portion 6 can cover the clearance gap 5.

[0030] Specifically, an arc-shaped fixing piece is provided at the lower side of the inlet end 1 near the clearance notch 5, and both ends of the fixing piece are fixed to the inlet end 1. The fixing piece is coaxially arranged with the inlet end 1, and a slot 7 is formed between the fixing piece and the bottom surface of the inlet end 1. The slot 7 is arranged along the axial direction of the inlet, and the sliding part 6 is slidably connected in the slot 7. Here, in order to ensure the stability of the sliding part 6 after sliding back and forth, concave slide grooves can be provided on both sides of the front end of the inlet end 1. Both slide grooves are in the shape of long strips and their length direction is consistent with the axial direction of the inlet. The positions of the two slide grooves are higher than the position of the clearance notch 5 and one end of the two slide grooves extends to a position close to the front end of the inlet end 1. The sliding part 6 has a card block that can be correspondingly inserted into the two slide grooves, so that the sliding part 6 can move back and forth along the slide groove relying on the card block. In this embodiment, the end of the sliding portion 6 facing the inlet direction of the inlet end 1 has a downwardly folded sheet-shaped operating portion 8, and the top surface of the sliding portion 6 has a protruding auxiliary portion. The cross-section of the auxiliary portion is roughly triangular and can be directly opposite to the lower end of the tool 4 to cooperate with the tool 4 to achieve cutting of the catheter 14. Without affecting safety, the corner at the top of the auxiliary portion cross-section can be a smaller acute angle.

[0031] The tube removal device also includes a test tube 10, which is detachably connected to the bottom of the housing 2, with the open end of the test tube 10 facing forward and provided with an end cap 12. In this embodiment, a U-shaped clamp 11 with its opening facing downward is fixed to the bottom of the housing 2, and the test tube 10 is clamped in the U-shaped clamp 11. A fixing ring is sleeved on the outside of the test tube 10, and the fixing ring is fixedly connected to the bottom of the housing 2 through a connecting rope 13. The end cap 12 is fixed to the fixing ring through a long plastic connecting strip to prevent the end cap 12 from falling off.

[0032] like Figure 2 As shown, when the tube removal instrument is used, the cutter 4 moves up to the highest position, the sliding part 6 moves back to be completely hidden under the inlet end 1, and the outer end of the indwelling catheter 14 is inserted into the shell 2 from the inlet of the inlet end 1, so that the outer end of the indwelling catheter 14 is pressed between the roller 3 and the inner wall of the inlet end 1. The operator can hold the tubular inlet end 1 and use the thumb to push the roller 3 forward to expose the top of the inlet end 1, so that the roller 3 rotates circumferentially and pulls the indwelling catheter 14 pressed between the roller 3 and the inner wall of the inlet end 1 to move into the shell 2.

[0033] During the inward movement of the indwelling catheter 14 , the bottom surface of the indwelling catheter 14 contacts the bottom of the front end of the inlet end 1 and the adjacent portion of the clearance notch 5 .

[0034] The indwelling catheter 14 is continuously moved inwards until the portion of the catheter 14 originally located in the human body moves below the cutter 4, and the rolling wheel 3 is stopped. If necessary, the catheter 14 can be moved further into the housing 2 to ensure that the portion of the catheter 14 at the gap 5 that needs to be cut and tested is all there.

[0035] Afterwards, the sliding part 6 is axially slid toward the inlet direction, so that the sliding part 6 covers the clearance notch 5, that is, the sliding part 6 is located below the indwelling catheter 14. The test tube 10 is taken out from the U-shaped clamp 11 at the bottom of the housing 2, the end cover 12 is opened, the test tube 10 is turned over, and the inner end of the indwelling catheter 14 is inserted into the test tube 10.

[0036] The cutter 4 is pressed down so that the edge of the bottom of the cutter 4 moves toward the sliding part 6 until the indwelling catheter 14 is cut off, and the housing 2 is tilted so that the catheter 14 can slide outward from the entrance of the inlet end 1 and fall into the test tube 10, and the end cap 12 is covered. After the catheter 14 is obtained, the connecting rope 13 can be torn or cut off so that the test tube 10 can be taken out separately, and the housing 2 part with most of the catheters 14 can be discarded.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An extubation device, characterized in that: The tube removal instrument comprises a shell (2) having a tubular inlet end (1), the top of the inlet end (1) being rotatably connected to a roller (3), the bottom of the roller (3) extending into the inlet end (1), a tool (4) vertically penetrating the top of the inlet end (1) near the inlet, the cutting edge of the tool (4) being located in the inlet end (1) and being movable toward the other side of the inlet end (1) relative to the tool (4), a clearance notch (5) being provided at the bottom of the inlet end (1) opposite to the tool (4), a sliding portion (6) being arranged at the clearance notch (5) and being capable of covering the clearance notch (5), the sliding portion (6) being axially slidably connected to the inlet end (1), and the sliding portion (6) being capable of moving to below the bottom surface of the inlet end (1).

2. The extubation device according to claim 1, characterized in that: The bottom of the inlet end (1) has a slot (7) arranged along the axial direction of the inlet, and the sliding part (6) is slidably connected in the slot (7).

3. The tube removal device according to claim 1 or 2, characterized in that: Both sides of the inlet end (1) are provided with recessed slide grooves, the two slide grooves are in the shape of long strips and their length direction is consistent with the axial direction of the inlet, one end of the two slide grooves extends to the inlet of the inlet end (1), and the sliding part (6) is provided with a block that can be correspondingly inserted into the two slide grooves.

4. The tube removal device according to claim 1 or 2, characterized in that: One end of the sliding portion (6) facing the inlet direction of the inlet end (1) has an operating portion (8) folded downward.

5. The tube removal device according to claim 1 or 2, characterized in that: The shell (2) has a storage portion (9) at one end away from the inlet of the inlet end (1), wherein the storage portion (9) has a cavity in communication with the inner hole of the inlet end (1), and the end of the inlet end (1) away from the inlet is bent downward and connected to the storage portion (9).

6. The tube removal device according to claim 1 or 2, characterized in that: The tube removal device further comprises a test tube (10), wherein the test tube (10) is detachably connected to the bottom of the housing (2), and an end cap (12) is provided at the open end of the test tube (10).

7. The extubation device according to claim 6, characterized in that: The bottom of the housing (2) is provided with a U-shaped clamp (11) with an opening facing downwards, the test tube (10) is clamped in the U-shaped clamp (11), and the test tube (10) is also connected to the bottom of the housing (2) via a connecting rope (13).

8. The tube removal device according to claim 1 or 2, characterized in that: The outer side of the roller (3) is provided with a plurality of protruding teeth, and the plurality of teeth are evenly distributed on the outer side of the roller (3) around the axis of the roller (3).

9. The tube removal device according to claim 1 or 2, characterized in that: The cutter (4) is sleeved with a return spring, one end of the return spring abuts against the outside of the housing (2), and the other end abuts against the cutter (4).

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