CN110898271B

CN110898271B - Fixing device for membrane oxygenator

Info

Publication number: CN110898271B
Application number: CN201811072101.4A
Authority: CN
Inventors: 陈博; 魏信鑫; 林伟东; 刘三强; 刘付福江
Original assignee: Dongguan Kewei Medical Instrument Co Ltd
Current assignee: Dongguan Kewei Medical Instrument Co Ltd
Priority date: 2018-09-14
Filing date: 2018-09-14
Publication date: 2022-09-23
Anticipated expiration: 2038-09-14
Also published as: CN110898271A

Abstract

The invention discloses a fixing device for a membrane oxygenator, which comprises a shell, a clamping piece and a driving piece, wherein the shell is provided with a first accommodating space, a second accommodating space and a notch, the second accommodating space and the notch are positioned above the first accommodating space, the clamping piece is arranged in the first accommodating space, one end of the clamping piece is provided with a clamping hook protruding from the notch, the driving piece is arranged in the second accommodating space, and the driving piece is connected with a guide groove of the clamping piece through a guide hole. The fixing device can be operated by one hand and can be quickly installed on or detached from the membrane oxygenator, and the fixing device can be arranged at the joint of the blood storage and the connecting frame, so that the connection of the guide tube with the blood storage and the oxygenator and the reading of the blood volume scale of the blood storage are not hindered.

Description

Fixing device for membrane oxygenator

Technical Field

The invention relates to the field of medical instruments, in particular to a fixing device for a membrane oxygenator.

Background

Membrane oxygenators are medical devices commonly used in cardiac surgery, and are typically secured in use near a patient's bed by means of an external support. During use, the index determination needs to be performed by reading the scale on the transparent casing of the oxygenator. Meanwhile, more guide tubes are often inserted outside the oxygenator to exchange liquid. Currently, most of fixing supports for fixing the membrane oxygenator are in a metal ring structure, and the membrane oxygenator is placed into a metal ring of the fixing support from the top to support and fix. When the membrane oxygenator is sleeved at the top and put into the metal ring for supporting and fixing, the membrane oxygenator is easy to pull, damage and difficult to take and place due to more guide pipes inserted outside the oxygenator. In addition, the existing membrane oxygenator fixes the bracket and the columnar structure near the hospital bed by a screwing bolt device similar to that on an iron stand, and the mode is complex to adjust and inconvenient to disassemble. The metal ring can block the scale on the transparent shell of the oxygenator, which causes data reading difficulty.

Disclosure of Invention

The invention provides a fixing device for a membrane oxygenator, which aims to solve the problems of complex operation and difficult data reading of a fixing bracket for fixing the membrane oxygenator.

In order to solve the technical problem, the invention is realized as follows:

the fixing device for the membrane oxygenator comprises a shell, a clamping piece and a driving piece, wherein the shell is provided with a first accommodating space, a second accommodating space and a notch, the second accommodating space is located above the first accommodating space, the clamping piece is arranged in the first accommodating space, one end of the clamping piece is provided with a clamping hook protruding from the notch, the driving piece is arranged in the second accommodating space, and the driving piece is connected with a guide groove of the clamping piece through a guide hole.

In the embodiment of the invention, the fixing device can be operated by one hand through the arrangement of the buckling piece and the driving piece, and the fixing device is connected to the membrane oxygenator to achieve the effect of one-key installation and detachment only by pushing the driving piece to drive the buckling piece to be buckled or separated from the fixing groove of the membrane oxygenator. The fixing device of the invention is connected with the connection part of the blood storage and the connecting frame of the membrane oxygenator, thus not hindering the reading of the blood volume scale of the blood storage and not influencing the connection of the drainage tube, the blood storage and the oxygenator.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a perspective view of a fixing device according to a first embodiment of the present invention.

Fig. 2 is a cross-sectional view taken along a-a' in fig. 1.

Fig. 3 is a cross-sectional view taken along the direction B-B' in fig. 1.

Fig. 4A is a state view of the fixing device according to the first embodiment of the present invention.

Fig. 4B is another state diagram of the fixing device according to the first embodiment of the present invention.

FIG. 5 is a schematic diagram of a membrane oxygenator of a first embodiment of the present invention.

Fig. 6 is a cross-sectional view of a fixing device according to a second embodiment of the present invention.

Fig. 7 is a perspective view of a fixing device according to a third embodiment of the present invention.

Fig. 8 is a cross-sectional view of a fixing device according to a third embodiment of the present invention.

Fig. 9A is a state view of the fixing device according to the third embodiment of the present invention.

Fig. 9B is another state diagram of the fixing device according to the third embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1, 2 and 3, which are a perspective view of a fixing device according to a first embodiment of the present invention, a cross-sectional view along a-a 'in fig. 1, and a cross-sectional view along a B-B' in fig. 1; as shown in the drawings, the present embodiment provides a fixing device 1 for a membrane oxygenator, the fixing device 1 includes a housing 10, a fastener 11 and a driving member 12, the housing 10 has a first accommodating space 101, a second accommodating space 102 and a notch 103, the second accommodating space 102 is located above the first accommodating space 101, and the first accommodating space 101 is communicated with the second accommodating space 102 through a guiding hole 104. The notch 103 is opened at one side of the housing 10 and is communicated with the first accommodating space 101.

The fastener 11 has a first end 11a, a second end 11b opposite to the first end 11a, and a support portion 11c located between the first end 11a and the second end 11b, the fastener 11 is disposed in the first accommodating space 101, the support portion 11c is pivotally connected to two opposite sidewalls of the first accommodating space 101, the support portion 11c of the embodiment is a triangular prism, a vertex of the triangular prism abuts against a bottom of the first accommodating space 101, so that the support portion 11c forms a fulcrum, and the first end 11a and the second end 11b swing relative to the support portion 11 c. The end surface of the first end 11a is provided with a hook 111, and the hook 111 protrudes from the notch 103. The first end portion 11a is further provided with a guiding block 112, and the guiding block 112 is located between the hook 111 and the supporting portion 11c and corresponds to the guiding hole 104. The surface of the side wall of the guiding block 112 facing the first accommodating space 101 has a guiding groove 1121, and the guiding groove 1121 extends along the second end 11b toward the first end 11a, that is, the extending direction of the guiding groove 1121 is the same as the extending direction of the fastener 11. One end of the guiding groove 1121 close to the supporting portion 11c is lower than one end of the guiding groove 1121 close to the hook 111, one end of the guiding groove 1121 close to the supporting portion 11c extends toward the surface of the guiding block 1121 facing the second accommodating space 102, and an opening 1122 is formed on the surface of the guiding block 1121 facing the second accommodating space 102. The guiding groove 1121 has a recess 1123 at an end thereof adjacent to the hook 111.

The driving member 12 includes a driving block 121, a driving protrusion 122 disposed on the driving block 121, and a pushing protrusion 123 disposed on the driving block 121 and opposite to the driving protrusion 122. The driving member 12 is disposed in the second accommodating space 102, the driving protrusion 122 passes through the guiding hole 104, and the protruding point 1221 is disposed in the guiding groove 1121. The pushing protrusion 123 protrudes from the hole 105 of the housing 10, wherein the hole 105 is communicated with the second accommodating space 102, which also means that the hole 105 can be opened on the top surface or the side surface of the housing 10, and only the second accommodating space 102 is communicated with the pushing protrusion 123, so that the pushing protrusion 123 can protrude from the hole 105 and drive the driving block 121 to move along the extending direction of the fastener 11. Wherein the periphery of the opening 1122 communicating with the guiding groove 1121 has a chamfer, increasing the size of the opening 1122 so that the size of the opening 1122 is larger than the size of the raised dots 1221, the raised dots 1221 of the driving protrusions 122 are easily mounted into the guiding groove 1121.

Please refer to fig. 4A and fig. 4B, which are diagrams illustrating a usage status of the fixing device according to the first embodiment of the present invention; as shown in the figure, when the fixing device 1 of the present embodiment is to be installed on the membrane oxygenator 2, the fixing device 1 is mainly installed at the position where the blood storage 21 is connected with the connecting frame 22, the blood storage 21 of the present embodiment has a connecting portion 211, and one side of the connecting portion 211 is provided with a fixing groove 212. When the fixing device 1 of the present embodiment is installed on the membrane oxygenator 2, the fixing device 1 first abuts against the fixing groove 212, and the hook 111 corresponds to the notch of the fixing groove 212. At this time, the pushing protrusion 123 of the driving member 12 abuts against the side of the hole 105 close to the membrane oxygenator 2, and the hook 111 is not fixed to the notch of the fixing groove 212, which is in an unlocked state. Then, the pushing protrusion 123 is pulled to move in a direction away from the membrane oxygenator 2, the pushing protrusion 123 drives the driving block 121 to move in a direction away from the membrane oxygenator 2, the protruding points 1221 of the driving protrusion 122 move in the guiding grooves 1121 along the moving direction of the driving protrusion 122 in the horizontal direction, and move to one end of the guiding grooves 1121 close to the supporting portions 11c, so that the first end portion 11a moves toward the fixing groove 212, the hooks 111 enter the notches of the fixing groove 212, and the fixing device 1 is in a locking state, and is further fixed on the oxygenator 2.

Referring to fig. 2 and fig. 3, a positioning column 113 is disposed on a surface of the second end portion 11b of the fastening element 11 facing the second accommodating space 102, the housing 10 has a positioning groove 106, and the positioning groove 106 is located at one side of the second accommodating space 102 and corresponds to the positioning column 113. When the pushing protrusion 123 moves toward the membrane oxygenator 2, the driving protrusion 122 of the driving block 121 pushed by the pushing protrusion 123 moves toward the membrane oxygenator 2, the protruding points 1221 move in the guiding grooves 1121 and move into the grooves 1123 to drive the first end portion 11a to move downward so that the hooks 111 disengage from the notches of the fixing grooves 212, and while the first end portion 11a moves downward, the second end portion 11b moves upward so that the positioning posts 113 enter the positioning slots 106, so that the movement of the latching member 11 can be ensured at a predetermined position, and the hooks 111 can be accurately fixed to the notches of the fixing grooves 212. In the embodiment, the side wall of the connection portion between the groove 1123 and the guiding groove 1121 is further provided with a stopping protrusion 1124, when the protruding point 1221 enters the groove 1123, the protruding point 1221 is stopped by the stopping protrusion 1124, so that the driving member 12 is not accidentally touched by a user to be separated from the groove 1123, and the connection stability between the fixing device 1 and the membrane oxygenator 2 is ensured. Therefore, when the bump 1221 is to be separated from the recess 1123, the user must apply an external force to the driving member 12 to force the bump 1221 to be separated from the recess 1123.

Referring to fig. 1, the housing 10 of the present embodiment has two extending portions 107, the two extending portions 107 respectively extend from two sides of one end of the housing 10 having the notch 103 to a direction away from the housing 10, when the fixing device 1 is fixed to the membrane oxygenator 2, the two extending portions 107 surround the connecting portion 211 of the blood reservoir 21, as shown in fig. 4A and 4B, so as to support the blood reservoir 21, and the two extending portions 107 increase the contact area between the housing 10 and the connecting portion 211, thereby increasing the connection stability between the fixing device 1 and the membrane oxygenator 2. FIG. 5 is a schematic diagram of a membrane oxygenator according to a first embodiment of the present invention; as shown in the figure, the connecting portion 211 further has two engaging grooves 2111, the two engaging grooves 2111 are respectively located at two sides of the fixing groove 212, the two extending portions 107 respectively have engaging protrusions 1071, when the fixing device 1 is assembled to the connecting portion 211 of the membrane oxygenator 2, the two engaging protrusions 1071 of the two extending portions 107 are engaged with the two engaging grooves 2111, thereby further increasing the connection stability between the fixing device 1 and the membrane oxygenator 2.

Please refer to fig. 6, which is a cross-sectional view of a fixing device according to a second embodiment of the present invention; the second embodiment is substantially the same as the first embodiment, and the description of the same parts is omitted, and the differences will be mainly described below. As shown in the figure, the bottom of the first accommodating space 101 of the housing 10 of the present embodiment is provided with an elastic body 108, and the elastic body 108 is located below the second end portion 11 b. When the hook 111 of the first end 11a of the locking element 11 is fixed to the notch of the fixing groove 212 (as shown in fig. 5), the first end 11a moves upward, the second end 11b moves downward and abuts against the elastic body 108, and the elastic body 108 is compressed by the second end 11 b. When the hook 111 of the first end 11a of the locking member 11 is disengaged from the notch of the fixing groove 212, the first end 11a moves downward, the second end 11b moves upward, the compressed elastic body 108 is released and generates a pushing force on the second end 11b, which accelerates the hook 111 to disengage from the notch of the fixing groove.

Please refer to fig. 7 and 8, which are a perspective view and a cross-sectional view of a fixing device according to a third embodiment of the present invention; the third embodiment is substantially the same as the first embodiment, and the description of the same parts is omitted, and the differences will be mainly described below. As shown in the figure, the driving block 121 of the embodiment has an accommodating groove 1211, a pushing mechanism 1212 is disposed in the accommodating groove 1211, and the notch 103 of the housing 10 extends toward the second accommodating space 102, so that the pushing mechanism 1212 protrudes from the notch 103. Please refer to fig. 9A and 9B, which are diagrams illustrating a state of the fixing device according to the third embodiment of the present invention; as shown in the figure, when the fixing device 1 is to be fixed to the membrane oxygenator 2, the pushing mechanism 1212 first abuts against the outer wall of the fixing groove 212, and the hook 111 is not located below the notch of the fixing groove 212. As the fixing device 1 is pushed to move toward the membrane oxygenator 2, the pushing protrusion 123 of the driving member 12 moves toward the membrane oxygenator 2, the pushing protrusion 123 drives the driving block 121 to move toward the membrane oxygenator 2, the pushing mechanism 1212 enters the accommodating groove 1211, so that the surface of the housing 10 having the notch 103 is attached to the outer wall of the fixing groove 212, and the hook 111 of the fastening member 11 moves toward the lower portion of the notch of the fixing groove 212 and is finally fixed in the notch of the fixing groove 212. When the fixing device 1 is to be detached from the membrane oxygenator 2, the pushing convex part 123 of the driving member 12 is far away from the membrane oxygenator 2, the driving block 121 is far away from the membrane oxygenator 2, not only the hook 111 of the fastening member 11 is driven to be disengaged from the notch of the fixing groove 212, but also the pushing mechanism 1212 is ejected from the accommodating groove 1211 and pushes the outer wall of the fixing groove 212, so that the surface of the housing 10 with the notch 103 is disengaged from the outer wall of the fixing groove 212, and the hook 111 does not correspond to the notch of the fixing groove 212, thereby determining that the fixing device 1 is completely separated from the membrane oxygenator 2. The pushing mechanism 1212 for achieving the above-mentioned operation includes a pushing elastic body 1213 and a pushing block 1214, the pushing elastic body 1213 is disposed in the receiving groove 1211, the pushing block 1214 is disposed in the receiving groove 1211 and abuts against the pushing elastic body 1213, the other end of the pushing block 1214 corresponds to the notch 103 of the housing 10, and when the fixing device 1 is in the unlocking state, the pushing block 1214 protrudes from the notch 103; when the fixing device 1 is in the locked state, the pushing block 1214 is located in the receiving groove 1211.

In summary, the present invention provides a fixing device for a membrane oxygenator, which is operated by one hand through the arrangement of a locking member and a driving member, and the locking member is driven to be locked or disengaged from a fixing groove of the membrane oxygenator only by pushing the driving member, so that the fixing device is connected to the membrane oxygenator, thereby achieving a one-key installation effect. The fixing device of the invention is connected with the connection part of the blood storage and the connecting frame of the membrane oxygenator, thus not hindering the reading of the blood volume scale of the blood storage and not influencing the connection of the drainage tube, the blood storage and the oxygenator.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A fixing device for a membrane oxygenator is characterized in that the fixing device is installed at a position where a blood storage warehouse of the membrane oxygenator is connected with a connecting frame, and comprises a shell, a clamping piece and a driving piece, wherein the shell is provided with a first accommodating space, a second accommodating space and a notch which are located above the first accommodating space, the first accommodating space is communicated with the second accommodating space through a guide hole, the clamping piece is arranged in the first accommodating space, one end of the clamping piece is provided with a clamping hook protruding from the notch, the driving piece is arranged in the second accommodating space, and the driving piece is connected with a guide groove of the clamping piece through the guide hole and used for controlling the position of the clamping hook.

2. The membrane oxygenator fixing device as in claim 1, wherein the fastener includes a first end portion, a second end portion and a supporting portion, the supporting portion is located between the first end portion and the second end portion, the supporting portion is pivotally connected to two opposite side walls of the first accommodating space, the hook is disposed on an end surface of the first end portion, a guiding block is disposed between the first end portion and the supporting portion, and the guiding block is provided with the guiding groove.

3. The membrane oxygenator fixing device as in claim 2, wherein the extending direction of the guiding groove is the same as the extending direction of the fastener, one end of the guiding groove near the support portion is lower than one end of the guiding groove near the hook, the guiding groove extends toward the surface of the guiding block facing the second accommodating space, an opening is formed on the surface of the guiding block facing the second accommodating space, and the periphery of the opening is provided with a chamfer.

4. The fixture for a membrane oxygenator as defined in claim 3 wherein the end of the guide channel adjacent to the snap has a recess and a stop ledge on the side wall where the guide channel joins the recess.

5. The membrane oxygenator fixture as recited in claim 2 wherein the second end portion has a positioning post on a surface thereof facing the second receiving space, and the housing has a positioning groove corresponding to the positioning post.

6. The fixture for a membrane oxygenator of claim 2, further comprising an elastic body disposed at the bottom of the first housing space and corresponding to the second end.

7. The fixture for a membrane oxygenator of claim 1, wherein the driver includes a driving block, a driving protrusion and a pushing protrusion, the driving protrusion is disposed on the driving block and passes through the guiding hole and connects with the guiding groove via a protruding point on the driving protrusion, the pushing protrusion is disposed on the driving block and is exposed from the opening of the housing.

8. The fixture for a membrane oxygenator of claim 7, wherein the driver further includes a pushing mechanism, the drive block having a receiving slot, the pushing mechanism being disposed within the receiving slot of the drive block and protruding from the notch.

9. The membrane oxygenator securing device of claim 8, wherein the pushing mechanism includes a pushing elastic body and a pushing block, the pushing elastic body is disposed in the receiving chamber, the pushing block is disposed in the receiving chamber, and one end of the pushing block abuts against the pushing elastic body.

10. The membrane oxygenator in claim 1 wherein the housing has two extensions, two of the extensions being opposite at the end of the housing having the notch, and wherein the opposite surfaces of the two extensions are each provided with a snap-fit protrusion.