Closed thoracic drainage device

Abstract

The invention relates to the field of medical instruments, and discloses a thoracic cavity closed drainage device which comprises a positioning device and a switch clip, the positioning device comprises a buffer part and a locking part, a clamping part used for being connected with the switch clip is connected between the buffer part and the locking part, and when the switch clip is separated from the positioning device, the locking part and a drainage tube are locked mutually. When the switch clip is clamped with the clamping part, the clamping part drives the buffer part to extrude the drainage tube and close the drainage tube, meanwhile, the clamping part pulls the locking part to be separated from the drainage tube, and the positioning device is used for being fixed with a wound of a patient. After the position of the drainage tube is adjusted, the positioning device is moved to the chest of a patient, a wound of the positioning device is fixed through a suture line, then the switch clamp is disengaged from the positioning device, the locking part of the positioning device is still locked with the drainage tube, and therefore the drainage tube is prevented from sliding at the chest of the patient. The buffering part can effectively buffer vibration caused by the drainage tube at the positioning device, so that the wound of a patient is protected.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a closed chest drainage device. Background Art

[0002] A closed chest drainage device is a medical device used to treat pleural effusion, gas or blood. Its main function is to promote lung expansion and restore the normal physiological state of the chest cavity by re-establishing negative pressure in the chest cavity. A closed chest drainage device usually consists of a drainage tube, a water seal bottle and a drainage bottle. One end of the drainage tube is inserted into the chest cavity, and the other end is connected to the water seal bottle below the chest cavity to achieve the discharge of liquid or gas.

[0003] After the drainage tube is inserted into the chest cavity, sutures are used to fix the punctured wound and the drainage tube together, and a layer of dressing is laid. However, this fixation method will cause the drainage tube to shake when the patient turns over or the water seal bottle moves, and the shaking of the drainage tube will cause the wound to shake. In addition, the connection between the drainage tube and the skin is not completely sealed. When the drainage tube causes the wound to shake, it will also cause air to enter the chest cavity, thereby causing pneumothorax or other complications.

[0004] A Chinese utility model patent with authorization announcement number CN206198353U discloses a closed chest drainage device and proposes a switch clamp. The switch clamp is arranged on the drainage tube, and the switch clamp is provided with a through hole for the drainage tube to pass through. It is also provided with a fixed clamp arm and a movable clamp arm. The fixed clamp arm and the movable clamp arm are provided with protrusions on opposite sides. The movable clamp arm is provided with an abutment edge. The top of the switch clamp is fixed with an abutment protrusion for interlocking with the abutment edge. The switch clamp is made of elastic material; however, the existing technology has not solved the problem of fixing the patient's drainage tube. Based on this, the following improvements are proposed. Summary of the Invention

[0005] The present invention aims to provide a closed chest drainage device to solve the problem of wound shaking caused by shaking of the drainage tube.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a closed chest drainage device, including a positioning device and a switch clamp that are sleeved on the drainage tube, the positioning device and the switch clamp can both slide on the drainage tube, and the switch clamp is detachably connected to the positioning device, the positioning device includes a buffer part and a locking part, and a clamping part for connecting to the switch clamp is connected between the buffer part and the locking part. When the switch clip is detached from the positioning device, the locking part and the drainage tube are locked with each other. When the switch clip is clamped with the clamping part, the clamping part drives the buffer part to squeeze the drainage tube and close it, and at the same time the clamping part pulls the locking part to disengage the drainage tube, and the positioning device is used to be fixed to the patient's wound.

[0007] The beneficial effects of this solution are as follows: the switch clamp can slide freely on the drainage tube, and the drainage tube can be closed at any position. The locking part on the positioning device can lock the relative position between the positioning device and the drainage tube. During the initial installation of the drainage device, the switch clamp is engaged with the clamping part on the positioning device. At this time, the clamping part drives the buffer part to squeeze the drainage tube to close it. In addition, the clamping part pulls the locking part on the positioning device to disengage the lock from the drainage tube. After the position of the drainage tube is adjusted, the positioning device is moved to the patient's chest, and the positioning device wound is fixed with sutures. After that, the switch clamp is disengaged from the positioning device. At this time, the locking part of the positioning device is still locked with the drainage tube, thereby preventing the drainage tube from sliding on the patient's chest. The buffer part can effectively buffer the vibration caused by the drainage tube at the positioning device, so that the shaking of the drainage tube will not be transmitted between the drainage tube and the patient's wound, thereby protecting the patient's wound from being immobilized.

[0008] Furthermore, when the drainage device is initially installed, the drainage tube needs to be clamped and slowly inserted into the patient's wound into the patient's chest cavity. At this time, during the process of slowly inserting the tube, the doctor needs to constantly change the clamping position of the drainage tube. The existing technology generally uses tweezers, but tweezers will cause the risk of the drainage tube being broken, and the tweezers are needed to clamp the drainage tube and forcefully insert it into the wound. The process is relatively dangerous. However, in this solution, during the process of the drainage tube being extended inward, the switch clamp and the positioning device are clamped by the clamping part. During the process of the clamping part and the switch clamp being clamped and positioned, the clamping part pulls the buffer part against the drainage tube and keeps it closed. At the same time, the clamping part drives the locking part to disengage the lock from the drainage tube. Therefore, the position of the switch clamp and the positioning device as a whole can be adjusted on the drainage tube, and this whole drives the drainage tube to be inserted into the wound until it is in the appropriate position.

[0009] Finally, when the positioning device is connected to the wound, the switch clamp is disengaged from it, and the switch clamp closes the drainage tube. When the other end of the drainage tube is connected to the drainage bottle, the drainage tube is opened by the switch clamp. The entire process ensures that the drainage tube remains closed and does not allow gas exchange between the patient's chest cavity and the outside world.

[0010] Preferably, as an improvement, the positioning device also includes a positioning plate outer sleeved on the drainage tube, the buffer portion includes at least two buffer rods circumferentially symmetrically hinged to the positioning plate, and a buffer member arranged between the buffer rod and the positioning plate, the buffer member being used to push the buffer rod against the outer wall of the drainage tube.

[0011] The beneficial effect is: when the positioning plate is relatively fixed to the wound, the buffer part drives the buffer rod to press against the outer wall of the drainage tube. At this time, when the drainage tube swings or shakes, the drainage tube transmits power to the buffer rod, and the buffer rod swings with the positioning plate as the guide to unload the power, thereby preventing the drainage tube from causing the wound to shake together.

[0012] Preferably, as an improvement, the locking portion includes a plurality of locking rods radially slidably connected to the positioning plate, the number of the locking rods is equal to the number of the buffer rods and corresponds one to one, the drainage tube is provided with a locking groove corresponding to the locking rod, and a locking piece is provided between the locking rod and the positioning plate, and the locking piece is used to push the locking rod into the locking groove.

[0013] Preferably, as an improvement, the clamping part includes a telescopic rod fixed to the locking rod and a clamping assembly connected to the telescopic rod, the clamping assembly includes a clamping shell slidably set on the buffer rod, a clamping block slidably connected to the clamping shell, and a clamping part is provided between the clamping block and the clamping shell.

[0014] The beneficial effect is: since the buffer rod is tilted and rests on the drainage tube, when the snap-on shell slides on the buffer rod, it will slide radially and axially along the drainage tube. At this time, the locking rod and the telescopic rod can respectively meet the two relative position changes of the snap-on shell, thereby achieving the purpose of the snap-on part driving the buffer part to squeeze the drainage tube when the switch is snapped with the snap-on part.

[0015] Preferably, as an improvement, the buffer, locking member and snap-fit ​​member are respectively configured as a torsion spring, a tension spring and a spring, the spring stiffness coefficient is greater than the tension spring stiffness coefficient, and the tension spring stiffness coefficient is greater than the torsion spring stiffness coefficient.

[0016] Preferably, as an improvement, the snap-in blocks are connected to the snap-in shell by sliding toward each other, a snap-in groove for the snap-in block to be embedded in the bottom end of the switch clamp is provided, the end of the snap-in block is rounded, and the snap-in groove is smoothly connected to the upper and lower side walls of the switch clamp.

[0017] The beneficial effect is: the setting of the stiffness coefficient can realize the closure of the drainage tube by the buffer part. Since the buffer rod is tilted toward the drainage tube under the drive of the torsion spring, the switch clamp is sheathed on the drainage tube. When the switch clamp is connected to the clamping part, the switch clamp will also be sheathed on several symmetrically arranged buffer rods and slowly move toward the positioning disk. At this time, the distance between the switch clamp and the positioning disk gradually becomes shorter, and at the same time, the distance between the switch clamp and the hinge point between the buffer rod and the positioning disk also becomes shorter. The torque applied to the buffer rod increases, and the spring compression causes the clamping part to slide into the clamping groove.

[0018] Since the stiffness coefficient of the spring is the largest, when the spring is compressed a small amount, it is enough to cause the clamping shell to stretch the tension spring through the telescopic rod, and the tension spring is stretched; since the stiffness coefficient of the torsion spring is the smallest, when the switch clamp is disengaged from the positioning device, the tension spring naturally contracts, causing the locking rod to press against the locking slot. At this time, the tension force of the tension spring to restore the deformation can cause the torsion spring to deform, thereby pressing the buffer rod against the drainage tube for vibration reduction, but at the same time the buffer rod will not close the drainage tube.

[0019] Preferably, as an improvement, the positioning disc is provided with a plurality of positioning holes for passing sutures.

[0020] Preferably, as an improvement, the positioning plate is fixed with a hinge shaft, the buffer rod is rotatably connected to the hinge shaft, and the torsion spring is connected between the hinge shaft and the buffer rod.

[0021] Preferably, as an improvement, a guide hole for the locking rod to slide is radially opened on the positioning disk, and the locking rod passes through the guide hole.

[0022] Preferably, as an improvement, the buffer rod is provided with a guide groove for the sliding of the snap-fit ​​shell, and the top end of the telescopic rod is fixedly connected to the bottom end of the snap-fit ​​shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a cross-sectional structure of an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the partial structure of the locking part and the buffer part at A in the middle; Figure 3 Schematic diagram of the cross-sectional structure of the switch clamp according to an embodiment of the present invention; Figure 4 The figure is a schematic diagram of the assembly structure of the switch clamp and the positioning device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific implementation methods: The figure marks in the drawings of the specification include: positioning device 1, positioning plate 11, hinge shaft 111, guide hole 112, buffer part 12, buffer rod 121, torsion spring 122, locking part 13, locking rod 131, tension spring 132, clamping part 14, clamping shell 141, clamping block 142, spring 143, telescopic rod 144, switch clip 2, clamping groove 21, drainage tube 3, locking groove 31.

[0025] Example The embodiment is basically as shown in the attached Figure 1-Figure 3 As shown, Figure 1The closed chest drainage device shown in the figure includes a positioning device 1 and a switch clamp 2 that are outer sleeved on the drainage tube 3. The switch clamp 2 is detachably connected to the positioning device 1. The positioning device 1 includes a positioning disk 11 that is outer sleeved on the drainage tube 3. The positioning disk 11 is provided with a buffer portion 12. The buffer portion 12 includes a plurality of hinge interfaces that are symmetrically opened on the positioning disk 11. The hinge interfaces are all fixed with hinge shafts 111. A buffer rod 121 is hinged at the hinge interface through the hinge shaft 111. A torsion spring 122 is connected between the buffer rod 121 and the hinge shaft 111. The torsion spring 122 is connected to the torsion spring 122. 22 is used to push the buffer rod 121 toward the drainage tube 3. The positioning disk 11 is radially slidingly provided with a locking portion 13. The locking portion 13 includes a plurality of guide holes 112 radially opened between the inner ring of the positioning disk 11 and the hinge interface. A locking rod 131 is slidably connected in the guide hole 112. The locking rod 131 passes through the guide hole 112. A tension spring 132 is connected between the locking rod 131 and the positioning disk 11. The drainage tube 3 is axially provided with a plurality of locking grooves 31 for the locking rod 131 to be embedded. The tension spring 132 is used to push the locking rod 131 into the locking groove 31.

[0026] like Figure 2-Figure 4 As shown, a clamping portion 14 is connected between the buffer portion 12 and the locking portion 13, and the clamping portion 14 includes a telescopic rod 144 connected to the locking rod 131 away from the end of the drainage tube 3. The base of the telescopic rod 144 is fixedly connected to the locking rod 131, and the clamping portion 14 also includes a clamping assembly slidably connected to the buffer rod 121. The buffer rod 121 is provided with a guide groove, and the clamping assembly includes a clamping shell 141 slidably connected to the guide groove. The clamping shell 141 is arranged near an opening of the drainage tube 3, and a clamping block 142 is slidably connected in the clamping shell 141. The clamping block A spring 143 is connected between 142 and the snap-on shell 141. The spring 143 is used to push the snap-on block 142 out of the snap-on shell 141. The stiffness coefficient of the spring 143 is greater than the stiffness coefficient of the tension spring 132. The stiffness coefficient of the tension spring 132 is greater than the stiffness coefficient of the torsion spring 122. A snap-on groove 21 is provided on the outer ring at the bottom end of the switch clamp 2 for the snap-on block 142 to be embedded in. The end of the snap-on block 142 close to the drainage tube 3 is rounded. The snap-on groove 21 is smoothly connected to the outer wall of the switch clamp 2. The spring 143 is used to push the snap-on block 142 into the snap-on groove 21.

[0027] Its working principle is: in the initial state, the switch clamp 2 and the positioning device 1 are not engaged, and the switch clamp 2 and the positioning device 1 are both sleeved on the drainage tube 3. At this time, the tension spring 132 pulls the locking rod 131 and presses it against the locking groove 31 of the drainage tube 3. The torsion spring 122 acts on the buffer rod 121 to make the end of the buffer rod 121 press against the drainage tube 3. When the drainage tube 3 needs to be inserted into the patient's chest cavity, the switch clamp 2 moves on the drainage tube 3 toward the direction close to the positioning disk 11. The inner ring of the switch clamp 2 is sleeved on the outside of several buffer rods 121. The switch clamp 2 continues to move and gradually presses several buffer rods 121. The buffer rod 121 continues to rotate on the positioning disk 11 under the drive of the inner ring of the switch clamp 2, and continues to slide the switch clamp 2. The switch clamp 2 presses down the clamping component during the movement.

[0028] During the sliding process, the snap shell 141 drives the locking rod 131 to move away from the drainage tube 3 through the telescopic rod 144, and the switch clamp 2 continues to press the snap assembly until the snap shell 141 and the end of the guide groove close to the hinge shaft 111 are abutted. At this time, several circumferentially symmetrical snap shells 141 are pressed down to the same plane at the same time, and several snap shells 141 drive the ends of several buffer rods 121 to abut against the drainage tube 3 until the drainage tube 3 is closed. Finally, the spring 143 is compressed, and the spring 143 pushes the snap block 142 against the locking groove 31, and the locking groove 31 locks the snap block 142. At this time, the drainage tube 3 can be passed through the patient's injury by the handheld positioning device 1. The mouth is stabbed into the chest, because when the switch clip 2 is put on and clamped on the positioning device 1, the switch clip 2 cannot close the drainage tube 3. At this time, the positioning device 1 is driven by the switch clip 2 to close the drainage tube 3. When the drainage tube 3 is placed, the switch clip 2 is disengaged from the positioning device 1. At this time, the switch clip 2 can slide freely on the drainage tube 3. At this time, the drainage tube 3 can be closed by the switch clip 2 alone, and the patient's wound and the positioning plate 11 are fixed through the positioning hole by sutures. At this time, the torsion spring 122 drives the buffer rod 121 to press against the drainage tube 3, so the buffer rod 121 has a buffering effect on the shaking drainage tube 3, thereby preventing the shaking from being transmitted to the patient's wound.

[0029] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A closed chest drainage device, characterized in that: It includes a positioning device and a switch clip that are sleeved on the drainage tube. The positioning device and the switch clip can both slide on the drainage tube. The switch clip is detachably connected to the positioning device. The positioning device includes a buffer part and a locking part. A clamping part for connecting with the switch clip is connected between the buffer part and the locking part. When the switch clip is detached from the positioning device, the locking part and the drainage tube are locked with each other. When the switch clip is clamped with the clamping part, the clamping part drives the buffer part to squeeze the drainage tube and close it. At the same time, the clamping part pulls the locking part to disengage the drainage tube. The positioning device is used to be fixed to the patient's wound.

2. The drainage device according to claim 1, characterized in that: The positioning device also includes a positioning plate outer sleeved on the drainage tube, and the buffer portion includes at least two buffer rods symmetrically hinged to the positioning plate and a buffer member arranged between the buffer rod and the positioning plate, and the buffer member is used to push the buffer rod against the outer wall of the drainage tube.

3. The drainage device according to claim 2, characterized in that: The locking part includes several locking rods radially slidably connected to the positioning plate. The number of locking rods is equal to and corresponds to the number of buffer rods. The drainage tube is provided with a locking groove corresponding to the locking rod. A locking piece is provided between the locking rod and the positioning plate. The locking piece is used to push the locking rod into the locking groove.

4. The drainage device according to claim 3, characterized in that: The clamping part includes a telescopic rod fixed to the locking rod and a clamping assembly connected to the telescopic rod. The clamping assembly includes a clamping shell slidably set on the buffer rod, a clamping block slidably connected to the clamping shell, and a clamping piece is set between the clamping block and the clamping shell.

5. The drainage device according to claim 4, characterized in that: The buffer, locking member and clamping member are respectively configured as a torsion spring, a tension spring and a spring, the spring stiffness coefficient is greater than the tension spring stiffness coefficient, and the tension spring stiffness coefficient is greater than the torsion spring stiffness coefficient.

6. The drainage device according to claim 5, characterized in that: The clamping blocks are connected to the clamping shell by sliding toward each other. The bottom of the switch clamp is provided with a clamping groove for the clamping block to be embedded. The end of the clamping block is rounded, and the upper and lower clamping grooves are smoothly connected to the side walls of the switch clamp.

7. The drainage device according to claim 2, characterized in that: The positioning plate is provided with a plurality of positioning holes for the suture threads to pass through.

8. The drainage device according to claim 2, characterized in that: The positioning plate is fixed with a hinge shaft, the buffer rod is rotatably connected to the hinge shaft, and the torsion spring is connected between the hinge shaft and the buffer rod.

9. The drainage device according to claim 3, characterized in that: A guide hole for the sliding of the locking rod is radially opened on the positioning disk, and the locking rod passes through the guide hole.

10. The drainage device according to claim 4, characterized in that: The buffer rod is provided with a guide groove for the sliding of the snap-on shell, and the top end of the telescopic rod is fixedly connected with the bottom end of the snap-on shell.

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