A closed thoracic drainage device

Abstract

The present application relates to the field of medical devices, and discloses a closed thoracic drainage device, which comprises a positioning device and a switch clamp, the positioning device comprises a buffer part and a locking part, a clamping part for connecting with the switch clamp is connected between the buffer part and the locking part, when the switch clamp is separated from the positioning device, the locking part is locked with the drainage tube, when the switch clamp is clamped with the clamping part, the clamping part drives the buffer part to extrude the drainage tube and make it closed, and meanwhile the clamping part pulls the locking part to separate from the drainage tube, the positioning device is used for fixing the wound of the patient. When the position of the drainage tube is adjusted, the positioning device is moved to the chest of the patient, and the positioning device is fixed to the wound of the patient through a suture line, then the switch clamp is separated from the clamping of the positioning device, at this time, the locking part of the positioning device is still locked with the drainage tube, so that the drainage tube is prevented from sliding on the chest of the patient, and the buffer part can effectively buffer the vibration caused by the drainage tube at the positioning device, so as to protect the wound of the patient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a closed thoracic drainage device. BACKGROUND

[0002] The closed thoracic drainage device is a medical device used for treating fluid, gas or blood accumulation in the thoracic cavity. Its main function is to restore the normal physiological state of the thoracic cavity by reestablishing negative pressure in the thoracic cavity and promoting lung recruitment. The closed thoracic drainage device is usually composed of a drainage tube, a water seal bottle and a drainage bottle. The drainage tube is inserted into the thoracic cavity at one end and connected to the water seal bottle at the other end, which is positioned below the thoracic cavity, to achieve the discharge of fluid or gas.

[0003] After the drainage tube is inserted into the thoracic cavity, a suture needle is used to fix the punctured wound and the drainage tube together, and a layer of dressing is laid. However, this fixing method will cause the drainage tube to shake when the patient turns over or when the water seal bottle is moved. The shaking of the drainage tube will cause the wound to shake as well. In addition, the connection between the drainage tube and the skin is not completely sealed, and when the drainage tube shakes with the wound, it will also cause air to enter the thoracic cavity, leading to pneumothorax or other complications.

[0004] A closed thoracic drainage device is disclosed in Chinese Utility Model Patent No. CN206198353U. It proposes a switch clamp, which is sleeved on the drainage tube. The switch clamp has a through hole for the drainage tube to pass through. It also has a fixed clamp arm and a movable clamp arm. The opposite sides of the fixed clamp arm and the movable clamp arm are provided with protrusions. The movable clamp arm is provided with an abutting edge. The top end of the switch clamp is fixed with an abutting protrusion for buckling with the abutting edge. The switch clamp is made of elastic material. However, the existing technology has not solved the problem of fixing the drainage tube for patients. Therefore, the following improvements are proposed. SUMMARY

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

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a closed thoracic drainage device, comprising a positioning device and a switch clamp sleeved on the drainage tube. The positioning device and the switch clamp can slide on the drainage tube. The switch clamp is detachably connected to the positioning device. The positioning device comprises a buffer part and a locking part. The buffer part and the locking part are connected by a clamping part for connecting with the switch clamp. When the switch clamp is separated from the positioning device, the locking part is locked with the drainage tube. When the switch clamp is clamped with the clamping part, the clamping part drives the buffer part to press the drainage tube and close it, while the clamping part pulls the locking part to unlock with the drainage tube. The positioning device is used to fix the wound of the patient.

[0007] The switch clamp can slide freely on the drainage tube, and the drainage tube can be closed at any position. The locking part of the positioning device can lock the relative position between the positioning device and the drainage tube. During initial installation of the drainage device, the switch clamp is clamped with the clamping part on the positioning device. At this time, the clamping part drives the buffer part to press the drainage tube to close it. In addition, the clamping part pulls the locking part on the positioning device to unlock the drainage tube. When the position of the drainage tube is adjusted, the positioning device is moved to the patient's chest, and the positioning device is fixed to the wound by the suture. Then, the switch clamp is disengaged from the clamping part on 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 positioning device on the drainage tube, so that the vibration of the drainage tube is not transmitted to the drainage tube and the patient's wound, thereby protecting the patient's wound.

[0008] Further, during initial installation of the drainage device, the drainage tube needs to be clamped and slowly inserted into the patient's chest through the patient's wound. At this time, the doctor needs to constantly change the clamping position of the drainage tube during the slow insertion process. In the prior art, forceps are generally used. However, the forceps can cause the risk of damaging the drainage tube. In addition, the forceps need to clamp the drainage tube and force it into the wound. The process is relatively dangerous. However, in the present scheme, the switch clamp is clamped with the positioning device through the clamping part during the inward insertion of the drainage tube. During the clamping and positioning of the clamping part and the switch clamp, 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 unlock the drainage tube. Therefore, the position of the switch clamp and the positioning device as a whole on the drainage tube can be adjusted, and the whole drives the drainage tube to penetrate into the wound until the appropriate position.

[0009] Finally, when the positioning device is connected to the wound, the switch clamp is disengaged from the clamping part. At this time, the switch clamp closes the drainage tube. When the other end of the drainage tube is connected to the drainage bottle, the switch clamp is used to open the drainage tube. The whole process ensures that the drainage tube is continuously closed, and gas exchange between the patient's chest and the outside is prevented.

[0010] Preferably, as an improvement, the positioning device further comprises a positioning disc sleeved on the drainage tube. The buffer part comprises at least two circumferentially symmetrical buffer rods hinged to the positioning disc, and a buffer member arranged between the buffer rods and the positioning disc. The buffer member is used to drive the buffer rods against the outer wall of the drainage tube.

[0011] The beneficial effect is that when the positioning disc is relatively fixed to the wound, the buffer member drives the buffer rods 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 rods. The buffer rods swing with the positioning disc as the pivot to unload the power, thereby preventing the drainage tube from shaking together with the wound.

[0012] Preferably, as an improvement, the locking part comprises a plurality of locking rods radially slidingly connected to the positioning disc, the number of the locking rods is equal to and corresponds to the number of the buffer rods, the drainage tube is provided with locking grooves corresponding to the locking rods, and a locking member is arranged between the locking rods and the positioning disc, and the locking member is used to drive the locking rods into the locking grooves.

[0013] Preferably, as an improvement, the clamping part comprises an extension rod fixed to the locking rod and a clamping assembly connected to the extension rod, the clamping assembly comprises a clamping shell slidingly arranged on the buffer rod, and a clamping block slidingly connected to the clamping shell, and a clamping member is arranged between the clamping block and the clamping shell.

[0014] The beneficial effect is that, since the buffer rod is inclined and abuts against the drainage tube, when the clamping shell slides on the buffer rod, the clamping shell will slide along the radial direction and the axial direction of the drainage tube, at this time, the locking rod and the extension rod can meet the two relative position changes of the clamping shell respectively, so as to achieve the purpose that when the switch is clamped with the clamping part, the clamping part drives the buffer part to press the drainage tube.

[0015] Preferably, as an improvement, the buffer member, the locking member and the clamping member are respectively provided as a torsion spring, a tension spring and a spring, and 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 clamping block is slidingly connected to the clamping shell in opposite directions, the switch clamp bottom end is provided with a clamping groove for embedding the clamping block, the clamping block end is provided with a round corner, and the clamping groove is smoothly connected between the upper and lower clamping grooves and the switch clamp side wall.

[0017] The beneficial effect is that the setting of the stiffness coefficient can realize the closing of the buffer part to the drainage tube, since the buffer rod is inclined and abuts against the drainage tube under the driving of the torsion spring, the switch clamp is sleeved on the drainage tube, when the switch clamp is connected with the clamping part, the switch clamp will also be sleeved on the plurality of buffer rods arranged symmetrically, and slowly moves towards the positioning disc, at this time, the distance between the switch clamp and the positioning disc gradually shortens, and the distance between the switch clamp and the hinge point between the buffer rod and the positioning disc also shortens, the torque of the buffer rod increases, and the spring compression causes the clamping member to slide into the clamping groove.

[0018] Since the spring has the largest stiffness coefficient, when the spring is slightly compressed, it is enough to cause the clamping shell to lengthen the tension spring through the extension rod, and after the tension spring is lengthened; since the torsion spring has the smallest stiffness coefficient, when the switch clamp is disconnected from the positioning device, the tension spring naturally contracts to cause the locking rod to abut against the locking groove, at this time, the tension of the spring recovering the deformation can cause the torsion spring to deform, so as to abut the buffer rod against the drainage tube to shake and dampen, 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 threading the suture.

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

[0021] Preferably, as an improvement, the positioning disc is radially provided with a guide hole for the sliding of the locking rod, and the locking rod penetrates through the guide hole.

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

[0023] Figure 1 Fig. 1 is a schematic view of the profile mechanism of the embodiment of the present application;

[0024] Figure 2 Fig. 2 is a schematic view of the locking part and the buffer part at A in Fig. 1; Figure 1

[0025] Figure 3 Fig. 3 is a schematic view of the profile structure of the switch clamp of the embodiment of the present application;

[0026] Figure 4 Fig. 4 is a schematic view of the assembly structure of the switch clamp and the positioning device of the embodiment of the present application. DETAILED DESCRIPTION

[0027] The following will be further described in detail through specific embodiments:

[0028] The reference signs in the drawings of the specification include: positioning device 1, positioning disc 11, hinged 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 clamp 2, clamping slot 21, drainage tube 3, locking slot 31.

[0029] EMBODIMENT

[0030] The embodiment is basically as shown in the drawings, such as Figures 1-3 Figure 1 ​​The chest closed drainage device shown in the application comprises a positioning device 1 and a switch clamp 2 sleeved on a drainage tube 3, the switch clamp 2 is detachably connected to the positioning device 1, the positioning device 1 comprises a positioning disc 11 sleeved on the drainage tube 3, the positioning disc 11 is provided with a buffer part 12, the buffer part 12 comprises a plurality of hinge joints circumferentially and symmetrically arranged on the positioning disc 11, a hinge shaft 111 is fixedly arranged at each hinge joint, a buffer rod 121 is hingedly connected to the hinge shaft 111 at each hinge joint, a torsional spring 122 is connected between the buffer rod 121 and the hinge shaft 111, the torsional spring 122 is used for pushing the buffer rod 121 towards the drainage tube 3, the positioning disc 11 is radially slidably provided with a locking part 13, the locking part 13 comprises a plurality of guide holes 112 radially arranged between the inner circle of the positioning disc 11 and the hinge joints, a locking rod 131 is slidably connected in each guide hole 112, the locking rod 131 penetrates through the guide hole 112, a tension spring 132 is connected between the locking rod 131 and the positioning disc 11, the drainage tube 3 is axially provided with a plurality of locking grooves 31 for embedding the locking rod 131, and the tension spring 132 is used for pushing the locking rod 131 into the locking groove 31.

[0031] As shown in the drawings, Figures 2-4 The buffer part 12 and the locking part 13 are connected with a clamping part 14, the clamping part 14 comprises a telescopic rod 144 connected to the end of the locking rod 131 away from the drainage tube 3, the base of the telescopic rod 144 is fixedly connected with the locking rod 131, the clamping part 14 further comprises a clamping assembly slidably connected to the buffer rod 121, the buffer rod 121 is provided with a guide groove, the clamping assembly comprises a clamping shell 141 slidably connected to the guide groove, the clamping shell 141 is provided with an opening near the drainage tube 3, a clamping block 142 is slidably connected in the clamping shell 141, a spring 143 is connected between the clamping block 142 and the clamping shell 141, the spring 143 is used for pushing the clamping block 142 out of the clamping shell 141, the stiffness coefficient of the spring 143 is greater than that of the tension spring 132, the stiffness coefficient of the tension spring 132 is greater than that of the torsional spring 122, the bottom end of the switch clamp 2 is provided with a clamping groove 21 for embedding the clamping block 142, the end of the clamping block 142 near the drainage tube 3 is provided with a rounded corner, the clamping groove 21 is smoothly connected with the outer side wall of the switch clamp 2, and the spring 143 is used for pushing the clamping block 142 towards the clamping groove 21.

[0032] The working principle is as follows: in the initial state, the switch clamp 2 and the positioning device 1 are not clamped, and the switch clamp 2 and the positioning device 1 are sleeved on the drainage tube 3, at this time the tension spring 132 pulls the locking rod 131 and is resisted in the locking groove 31 of the drainage tube 3, the torsion spring 122 acts on the buffer rod 121, and the end of the buffer rod 121 is resisted to 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 to the direction close to the positioning disc 11, the inner ring of the switch clamp 2 is sleeved outside the buffer rod 121, the switch clamp 2 continues to move and gradually presses the buffer rod 121, the buffer rod 121 continues to rotate on the positioning disc 11 under the drive of the inner ring of the switch clamp 2, the switch clamp 2 continues to slide, and the switch clamp 2 clamps the assembly in the process of moving.

[0033] The locking rod 131 is driven by the telescopic rod 144 to move away from the drainage tube 3 in the process of sliding, the switch clamp 2 continues to press the clamping assembly, until the clamping shell 141 is abutted with the end of the guide groove close to the hinge shaft 111, at this time the plurality of circumferentially symmetrical clamping shells 141 are simultaneously pressed to the same plane, the plurality of clamping shells 141 drive the end of the plurality of buffer rods 121 to abut the drainage tube 3, until the drainage tube 3 is closed, and finally the spring 143 is compressed, the spring 143 abuts the clamping block 142 to the locking groove 31, and the locking groove 31 locks the clamping block 142, at this time the drainage tube 3 can be inserted into the chest through the patient's wound by holding the positioning device 1, because the switch clamp 2 cannot close the drainage tube 3 when the switch clamp 2 is sleeved and clamped on the positioning device 1, at this time the switch clamp 2 drives the positioning device 1 to close the drainage tube 3, when the drainage tube 3 is installed, the switch clamp 2 is disengaged from the clamping of the positioning device 1, at this time the switch clamp 2 can slide freely on the drainage tube 3, at this time the switch clamp 2 can be closed alone, and the patient's wound is fixed to the positioning disc 11 through the positioning hole by the suture, at this time the torsion spring 122 drives the buffer rod 121 to abut the drainage tube 3, so that 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.

[0034] The above is only an embodiment of the present application, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present application, some modifications and improvements can be made, which should be regarded as the protection scope of the present application, and these will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific embodiments and the like in the description can be used to explain the content of the claims.

Claims

1. A chest drainage apparatus, characterized in that: The positioning device and the switch clamp are sleeved on the drainage tube, and the positioning device and the switch clamp are both slidable on the drainage tube. The switch clamp is detachably connected to the positioning device. The positioning device comprises a buffer part and a locking part. A clamping part for connecting with the switch clamp is connected between the buffer part and the locking part. When the switch clamp is separated from the positioning device, the locking part is locked with the drainage tube. When the switch clamp is clamped with the clamping part, the clamping part drives the buffer part to press the drainage tube and make it closed, and at the same time, the clamping part pulls the locking part to separate from the drainage tube. The positioning device is used to fix the wound of the patient. The positioning device further comprises a positioning disc sleeved on the drainage tube. The buffer part comprises at least two circumferentially symmetrical buffer rods hinged to the positioning disc. A buffer piece is arranged between the buffer rods and the positioning disc. The buffer piece is used to push the buffer rods against the outer wall of the drainage tube. The locking part comprises a plurality of locking rods radially slidingly connected to the positioning disc. The number of the locking rods is equal to and corresponds to the number of the buffer rods. The drainage tube is provided with a locking groove corresponding to the locking rods. A locking piece is arranged between the locking rods and the positioning disc. The locking piece is used to push the locking rods into the locking groove. The clamping part comprises an extension rod fixed to the locking rod and a clamping assembly connected to the extension rod. The clamping assembly comprises a clamping shell slidingly arranged on the buffer rod, a clamping block slidingly connected to the clamping shell, and a clamping piece arranged between the clamping block and the clamping shell. The buffer piece, the locking piece and the clamping piece are respectively arranged 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. The clamping block is slidingly connected to the clamping shell. The bottom end of the switch clamp is provided with a clamping groove for embedding the clamping block. The end of the clamping block is provided with a rounded corner. The clamping groove is smoothly connected between the upper and lower parts of the switch clamp and the side wall of the switch clamp.

2. The drainage device of claim 1, wherein: The positioning disc is provided with a plurality of positioning holes for threading the suture.

3. The drainage device of claim 1, wherein: The positioning disc is fixed with a hinged shaft. The buffer rod is rotationally connected to the hinged shaft. The torsion spring is connected between the hinged shaft and the buffer rod.

4. The drainage device of claim 1, wherein: The positioning disc is radially provided with a guide hole for sliding the locking rod. The locking rod penetrates the guide hole.

5. The drainage device of claim 1, wherein: The buffer rod is provided with a guide groove for sliding the clamping shell. The top end of the extension rod is fixedly connected with the bottom end of the clamping shell.

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