An umbilical cord scissors

Abstract

The present application relates to the technical field of obstetric medical instruments, in particular to a kind of umbilical cord scissors, including shear body and the clamping part for clamping umbilical cord with shear body detachable connection, clamping part includes two juxtaposition clamps, gap is formed installation slot between two clamps, clamp includes upper clamp arm, lower clamp arm, the first end of the first elastic connecting portion of the first end of upper clamp arm and lower clamp arm and locking mechanism, two clamps are connected through at least one connecting strip arranged on lower clamp arm, shear body includes upper arm, lower arm and the second elastic connecting portion of the first end of the first end of upper arm and lower arm, knife rest is arranged on upper arm, blade is arranged in knife rest, further include when the upper arm and upper clamp arm relative movement make blade slide and expose knife rest of push-pull mechanism.The umbilical cord scissors of the present application will not hurt operator when installing clamp or normally taking and placing shear body.

Description

Technical Field

[0001] This invention relates to the field of obstetric medical device technology, specifically to an umbilical cord scissors. Background Technology

[0002] The umbilical cord is a tubular structure connecting the fetus to the placenta of the pregnant mother. It facilitates the exchange of nutrients and oxygen between the fetal and maternal blood circulation. During childbirth, the umbilical cord needs to be cut to separate the baby from the mother. Doctors usually use umbilical cord scissors or umbilical cord cutting devices to cut the umbilical cord. For example, the prior art CN 101485584 B discloses a disposable bidirectional umbilical cord cutting and umbilical cord protection device, which can clamp and cut the umbilical cord with a single press. Another example is the prior art CN 102327137 B, which discloses a neonatal umbilical cord clamping and cutting device. In the above-mentioned prior art, the umbilical cord can be clamped and cut with a single press. However, the blades in the above-mentioned prior art are exposed, and there is a risk of the blade cutting fingers if medical personnel install the clamp or operate it improperly. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide an umbilical cord scissor to avoid injury to the operator from exposed blades during use.

[0004] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide an umbilical cord scissor, including a scissor body and a clamping part for clamping an infant's umbilical cord detachably connected to the scissor body. The clamping part includes two clamps arranged side by side, with a gap between the two clamps forming a mounting groove. The two clamps are connected by at least one connecting strip disposed on the lower clamping arm. The clamp includes an upper clamping arm, a lower clamping arm, a first elastic connecting part that elastically connects the first end of the upper clamping arm to the first end of the lower clamping arm, and a second elastic connecting part that elastically connects the second end of the upper clamping arm to the lower clamping arm. The locking mechanism that engages the second ends of the clamping arms together; the shear body includes an upper arm, a lower arm, and a second elastic connecting part that elastically connects the first end of the upper arm to the first end of the lower arm; a blade holder is provided on the upper arm, and a blade is provided inside the blade holder; a fixing mechanism is provided on the lower arm to fix the lower clamping arm to the lower arm; a protrusion that mates with the mounting groove is provided on the upper surface of the lower arm; a blade groove that mates with the blade is provided on the protrusion; and a push-pull mechanism that allows the blade to slide out of the blade holder when the upper arm and the upper clamping arm move relative to each other.

[0005] In the above scheme, since the blade is initially located inside the blade holder, the blade will not injure the operator when installing the clamps or normally picking up and putting down the scissors. When the clamping part is installed on the scissors, the protrusion on the lower arm is inserted into the mounting groove on the lower clamping arm. The connecting strip makes the two clamps located on both sides of the protrusion and close to the protrusion. The two upper clamping arms are located on both sides of the blade holder. The upper surface of the upper clamping arm is in contact with the lower surface of the upper arm, and the lower surface of the lower clamping arm is in contact with the upper surface of the lower arm. The umbilical cord is passed through the upper and lower clamping arms. The upper arm is pressed down to make the locking mechanism close the upper and lower clamping arms to clamp the umbilical cord. The upper arm is released. Under the elastic force of the second elastic connecting part, the upper arm springs back away from the upper clamping arm. At this time, the push-pull mechanism pushes the blade to slide out of the blade holder. The upper arm is pressed down again. The upper arm drives the blade to move down to cut the umbilical cord. Then the connecting strip between the two clamps is cut to separate the two clamps.

[0006] Furthermore, the tool holder is plate-shaped, and a vertical groove is provided in the tool holder to slide with the blade. The lower part of the tool holder is provided with an elastic limiting member to prevent the blade from automatically sliding out of the tool holder. The elastic limiting member includes a first sliding groove symmetrically arranged on the inner wall on both sides of the blade thickness of the vertical groove and a first sliding post sliding in the first sliding groove. A first spring is provided between the first sliding post and the bottom wall of the first sliding groove to force the first sliding post to extend out of the first sliding groove. Under the elastic force of the first spring, the ends of the two symmetrically arranged first sliding posts that extend out of the first sliding groove are in contact with the inclined surface of the blade edge. Under the pressing force of the two first sliding posts, the blade cannot automatically slide down out of the vertical groove.

[0007] Furthermore, the fixing mechanism includes an L-shaped limiting groove formed on the protrusion corresponding to the connecting strip. The L-shaped limiting groove includes a vertical part and a horizontal part. The vertical part extends upward through the protrusion, and the horizontal part is horizontally positioned.

[0008] When the mounting groove on the lower clamping arm is installed in conjunction with the protrusion on the lower arm, the connecting strip on the lower clamping arm is inserted into the vertical part of the L-shaped limiting groove. Then, the lower clamping arm is pushed along the length of the lower arm to move the lower clamping arm and push the connecting strip into the horizontal part of the L-shaped limiting groove. At this time, under the constraint of the horizontal part, the lower clamping arm cannot move upward away from the lower arm.

[0009] Furthermore, the push-pull mechanism includes a push rod fixedly connected to the blade, a strip-shaped hole disposed on the side wall of the tool holder to allow the push rod to slide and expose the blade from the tool holder, and a protrusion formed on the upper clamping arm.

[0010] Furthermore, the locking mechanism includes hook-shaped teeth formed at the second end of the lower clamping arm and a locking hole formed at the second end of the upper clamping arm that engages with the hook-shaped teeth. The upper arm drives the upper clamping arm to move downward, causing the hook-shaped teeth to engage in the locking hole, thereby locking the upper clamping arm and the lower clamping arm together.

[0011] Furthermore, elastic mechanisms are provided on both sides of the protrusion to push the lower arm away from the protrusion. The elastic mechanism includes a second sliding groove arranged along the thickness direction of the protrusion and a second sliding column slidably disposed in the second sliding groove. A second spring is provided between the second sliding column and the bottom wall of the second sliding groove to force the second sliding column to extend out of the second sliding groove. One end of the second sliding column extending out of the second sliding groove is provided with a downwardly inclined slope.

[0012] After the blade cuts the umbilical cord and continues to cut the connecting strip, the clamps on both sides of the protrusion separate from the shear body under the push of the second sliding pins on both sides of the protrusion.

[0013] Furthermore, the second sliding groove is located below the L-shaped limiting groove. Under the thrust of the second sliding column and the action of the connecting strip, the upper clamping arms of the two clamps move closer to each other and are pressed tightly against the two sides of the tool holder, preventing the upper clamping arms from detaching from the upper arm.

[0014] Furthermore, both the lower surface of the upper clamping arm and the upper surface of the lower clamping arm are provided with anti-slip toothed strips.

[0015] The present invention has at least the following beneficial effects:

[0016] 1. In this solution, the blade cannot extend outside the blade holder before the clamp is installed on the shear body and the clamp is tightened on the umbilical cord, so that the blade will not cause injury to the operator in case of improper operation or when the clamp is installed on the shear body.

[0017] 2. The present invention allows the blade to be exposed to cut the umbilical cord only when the clamp is closed, thus preventing the blade from cutting the umbilical cord when the clamp fails to close.

[0018] 3. The two clamps of the present invention automatically detach from the scissor body after the umbilical cord is cut. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a structural schematic diagram of the shear body from the left view direction.

[0021] Figure 2 for Figure 1 Sectional view of AA.

[0022] Figure 3 This is a schematic diagram of the structure from the left view of the clamping part.

[0023] Figure 4 for Figure 3 BB section view.

[0024] Figure 5 This is a schematic diagram showing the relative positions of all components in the front view when the clamping part is installed on the shear body and all components are in a horizontal position.

[0025] Figure 6 for Figure 5 Enlarged view of part A in the image.

[0026] Figure 7 for Figure 5 Enlarged view of part B in the image.

[0027] Figure 8 This is a diagram of the internal structure of the tool holder when the blade is not exposed in the main view direction.

[0028] Figure 9 A schematic diagram of the structure at the tool holder when the blade extends out of the tool holder in the main view direction.

[0029] Figure 10 This is a schematic diagram of the structure of the tool holder when the blade extends outside the tool holder in the left view direction.

[0030] The meanings of the labels in the attached diagram are as follows:

[0031] The components include: shear body 10, upper arm 101, lower arm 102, countersunk platform 1021, protrusion 103, blade groove 104, second elastic connecting part 105, blade holder 106, vertical groove 1061, strip hole 1062, blade 107, push rod 1071, clamping part 20, clamp 201, upper clamping arm 2011, protruding edge 2012, lower clamping arm 2013, first elastic connecting part 2014, hook-shaped tooth 2015, locking hole 2016, mounting groove 202, connecting strip 203, first sliding groove 301, first sliding column 302, first spring 303, L-shaped limiting groove 401, vertical part 4011, horizontal part 4012, second sliding groove 501, second sliding column 502, and second spring 503. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0034] like Figure 1-4 As shown, an umbilical cord scissor of this embodiment includes a scissor body 10 and a clamping part 20 for clamping an infant's umbilical cord, which is detachably connected to the scissor body 10.

[0035] Combination Figures 3-5 The clamping part 20 includes two clamps 201 arranged side by side, with a gap between the two clamps 201 forming an installation groove 202. The two clamps 201 are connected by at least one connecting strip 203 disposed on the lower clamping arm 2013. In this embodiment, the two clamps 201 are connected together by three connecting strips 203. In other feasible embodiments, different numbers of connecting strips 203 can be set according to the specifications of the clamps 201, such as 1, 2, 4, or a certain number of connecting strips 203. The clamp 201 includes an upper clamping arm 2011, a lower clamping arm 2013, a first elastic connecting part 2014 that elastically connects the first end of the upper clamping arm 2011 to the first end of the lower clamping arm 2013, and a locking mechanism that engages the second end of the upper clamping arm 2011 with the second end of the lower clamping arm 2013. The locking mechanism includes a hook-shaped tooth 2015 formed on the second end of the lower clamping arm 2013 and a locking hole 2016 that mates with the hook-shaped tooth 2015 on the second end of the upper clamping arm 2011. The hook-shaped tooth 2015 is made of plastic and has a certain degree of deformation and resilience.

[0036] The shear body 10 includes an upper arm 101, a lower arm 102, and a second elastic connecting part 105 that elastically connects the first end of the upper arm 101 to the first end of the lower arm 102. A blade holder 106 is fixedly connected to the upper arm 101, and a blade 107 is disposed inside the blade holder 106. A fixing mechanism is provided on the lower arm 102 to fix the lower clamping arm 2013 to the lower arm 102. A protrusion 103 that cooperates with the mounting groove 202 is provided on the upper surface of the lower arm 102. A blade groove 104 that cooperates with the blade 107 is provided on the protrusion 103. Anti-slip toothed strips are provided on the lower surface of the upper clamping arm 2011 and the upper surface of the lower clamping arm 2013.

[0037] Specifically, such as Figure 1 , Figure 2 On the upper surface of the lower arms 102 on both sides of the protrusion 103, there are recesses 1021 for placing the lower clamping arms 2013. The recesses 1021 penetrate the side wall of the lower arms 102 in a direction away from the protrusion 103. Figures 5-7The tool holder 106 is a vertically arranged plate-shaped body. A vertical groove 1061 is vertically arranged inside the tool holder 106, which slides through the blade 107. The lower end of the vertical groove 1061 extends downward through the tool holder 106. First sliding grooves 301 are symmetrically arranged on the inner walls of the vertical groove 1061 on both sides of the thickness of the blade 107. The first sliding grooves 301 are located at the lower part of the vertical groove and are blind holes. The axis of the first sliding grooves 301 is arranged along the thickness direction of the blade 107. A first sliding post 302 is slidably connected within the first sliding groove 301. A first spring 303 is provided between a sliding column 302 and the bottom wall of the first sliding groove 301. One end of the first spring 303 is fixedly connected to the bottom wall of the first sliding groove 301, and the other end of the first spring 303 is fixedly connected to the first sliding column 302. Under the elastic force of the first spring 303, the ends of the two symmetrically arranged first sliding columns 302 that extend out of the first sliding groove 301 are in contact with the inclined surface of the cutting edge of the blade 107. Under the pressing force of the two first sliding columns 302, the blade 107 cannot automatically slide down out of the vertical groove 1061.

[0038] like Figure 1 , Figure 2 As shown, the fixing mechanism includes an L-shaped limiting groove 401 formed on the protrusion 103 corresponding to the connecting strip 203. The L-shaped limiting groove 401 extends horizontally through the protrusion 103 along its thickness direction. The L-shaped limiting groove 401 includes a vertical part 4011 and a horizontal part 4012. The vertical part 4011 extends upward through the protrusion 103, and the horizontal part 4012 is horizontally positioned. When the mounting groove 202 on the lower clamping arm 2013 is fitted with the protrusion 103 on the lower arm 102, the connecting strip 203 on the lower clamping arm 2013 is engaged in the vertical part 4011 of the L-shaped limiting groove 401. Then, the lower clamping arm 2013 is pushed along the length direction of the lower arm 102 to move the lower clamping arm 2013 and push the connecting strip into the horizontal part 4012 of the L-shaped limiting groove 401. At this time, the lower clamping arm 2013 cannot move upward away from the lower arm 102.

[0039] Furthermore, when the upper arm 101 moves relative to the upper clamping arm 2011, the blade 107 is slidably exposed from the blade holder 106 via a push-pull mechanism. Figure 6 , Figure 8As shown, the push-pull mechanism includes a push rod 1071 fixedly connected to the blade 107, a slotted hole 1062 disposed on the side wall of the tool holder 106 to allow the push rod 1071 to slide and extend the blade 107 out of the tool holder 106, and a protruding edge 2012 formed on the upper end of the upper clamping arm 2011. The push rod 1071 is symmetrically disposed on both sides of the blade 107. The end of the push rod 1071 near the blade 107 is fixedly connected to the blade. Optionally, the end of the push rod 1071 near the blade 107 is provided with an external thread, and the blade 107 is provided with an internal thread that mates with the external thread on the push rod 1071. The push rod 1071 and the blade 107 can... The push rod 1071 is fixed together by a threaded connection and is perpendicular to the blade 107. The two side walls of the tool holder 106 are provided with strip holes 1062 corresponding to the push rod 1071. The end of the push rod 1071 away from the blade 107 extends out of the tool holder 106 through the strip holes 1062. The protruding edge 2012 is provided on the upper end face of the upper clamping arm 2011 near the tool holder 106 and is integrally formed with the upper clamping arm 2011. The thickness of the protruding edge 2012 is less than the distance between the lower surface of the upper arm 101 and the push rod 1071, so that the protruding edge 2012 can be inserted between the lower surface of the upper arm 101 and the push rod 1071.

[0040] Furthermore, a second sliding groove 501 is provided on both sides of the protrusion 103 along the thickness direction of the protrusion 103. A second sliding post 502 is slidably connected in the second sliding groove 501. A second spring 503 is provided between the second sliding post 502 and the bottom wall of the second sliding groove 501. One end of the second spring 503 is fixedly connected to the bottom wall of the second sliding groove 501, and the other end of the second spring 503 is fixedly connected to the second sliding post 502. Under the elastic force of the second spring 503, part of the second sliding post 502 extends out of the second sliding groove 501. The end of the second sliding post 502 that extends out of the second sliding groove 501 is provided with a slope that is inclined downward away from the protrusion 103. The second sliding post 502 is located below the L-shaped limiting groove 401, so that under the thrust of the second sliding post 502 and the action of the connecting strip 203, the upper clamping arms 2011 of the two clamps 201 approach each other and are pressed against the two sides of the tool holder 106, and the phenomenon of the upper clamping arms 2011 detaching from the upper arm 101 will not occur.

[0041] like Figure 5 As shown, when the clamp 201 is correctly installed on the shear body 10, the lower surface of the upper clamping arm 2011 is lower than the lower surface of the blade holder 106, and the upper surface of the lower clamping arm 2013 is higher than the upper surface of the protrusion 103, so that when the upper arm 101 is pressed down for the first time to clamp the umbilical cord, neither the blade holder 106 nor the protrusion 103 will press the umbilical cord.

[0042] The working principle of this solution is as follows:

[0043] Install the clamping part 20 correctly onto the shear body 10, referring to... Figures 5-7 The connecting strip 203 enters the straight part from the vertical part 4011 of the L-shaped limiting groove 401. The protrusion 103 on the lower arm 102 is inserted into the mounting groove 202 between the two lower clamping arms 2013. The lower clamping arms 2013 are located in the recess 1021 on the lower arm 102. At this time, the blade 107 is located in the blade holder 106. Under the elastic force of the first elastic connecting part 2014, the upper surface of the upper clamping arm 2011 abuts against the lower surface of the upper arm 101. The protrusion 2012 on the upper clamping arm 2011 is located above the push rod 1071, that is, the upper... The protrusion 2012 on the clamping arm 2011 is engaged between the push rod 1071 and the lower surface of the upper arm 101. When the two lower clamping arms 2013 are installed on the protrusion 103, the connecting bar 203 first moves down through the vertical part 4011 of the L-shaped limiting groove 401 and then moves horizontally to be located in the horizontal part 4012. When the connecting bar 203 moves down through the vertical part 4011 of the L-shaped limiting groove 401, the two second sliding pillars 502 on both sides of the protrusion 103 are squeezed back into the second sliding groove 501 by the lower clamping arms 2013, and the second spring 503 is compressed and stored.

[0044] Place the umbilical cord between the upper clamp arm 2011 and the lower clamp arm 2013 of the two clamps 201. Press down on the upper arm 101 so that the clamps 201 on both sides of the protrusion 103 clamp the umbilical cord. The hook-shaped teeth 2015 on the lower clamp arm 2013 engage with the corresponding locking holes 2016 on the upper clamp arm 2011, locking the clamps 201. Release your hand and stop pressing the upper arm 101. Under the elastic force of the second elastic connecting part 105, the upper arm 101 springs back away from the lower arm 102. When the knife holder 106 follows the upper arm 101 and springs back away from the lower arm 102, it combines... Figure 6 , Figure 9 , Figure 10 As shown, under the push of the push rod 1071 by the protruding edge 2012, the blade 107 overcomes the squeezing and blocking of the two first sliding pillars 302 and slides out of the tool holder 106. When the push rod 1071 moves from the upper end of the strip hole 1062 to the lower end of the strip hole 1062 and is blocked by the lower end of the strip hole 1062, the upper end of the blade 107 passes the first sliding pillar 302 downward. Under the elastic force of the first spring 303, the first sliding pillar 302 slides above the blade 107 to prevent the blade 107 from retracting back into the tool holder 106.

[0045] Pressing down the upper arm 101 again causes the upper arm 101 to move the blade holder 106 and the blade 107 downwards. The blade 107, which extends out of the blade holder 106, cuts the umbilical cord and continues to move downwards to insert into the blade groove 104 to cut the connecting strip 203. At this time, under the elastic force of the second spring 503, the two second sliding pillars 502 on both sides of the protrusion 103 extend out of the second sliding groove 501 to push the clamp 201 away from the shear body 10.

[0046] The above are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics in the solutions is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An umbilical cord scissors comprising a scissors body and a clamping part detachably connected with the scissors body for clamping an umbilical cord, characterized in that: the clamping part comprises two clamps arranged side by side with a gap therebetween to form a mounting groove, each of the clamps comprises an upper clamp arm, a lower clamp arm, a first elastic connecting part elastically connecting a first end of the upper clamp arm with a first end of the lower clamp arm, and a locking mechanism clamping a second end of the upper clamp arm with a second end of the lower clamp arm together, and the two clamps are connected through at least one connecting strip arranged on the lower clamp arm; the scissors body comprises an upper arm, a lower arm, and a second elastic connecting part elastically connecting a first end of the upper arm with a first end of the lower arm, a blade holder is arranged on the upper arm, a blade is arranged in the blade holder, a fixing mechanism for fixing the lower clamp arm on the lower arm is arranged on the lower arm, a convex block matched with the mounting groove is protruded on an upper surface of the lower arm, and a blade slot matched with the blade is arranged on the convex block; the umbilical cord scissors further comprises a push-pull mechanism for sliding the blade out of the blade holder when the upper arm moves relative to the upper clamp arm; the blade holder is a plate-shaped body, a vertical slot slidably matched with the blade is arranged in the blade holder, an elastic limiting part preventing the blade from automatically sliding out of the blade holder is arranged on a lower part of the blade holder, the elastic limiting part comprises first sliding grooves symmetrically arranged on inner walls on both sides of the thickness of the blade in the vertical slot and first sliding columns slidably arranged in the first sliding grooves, a first spring is arranged between the first sliding columns and a bottom wall of the first sliding grooves to force the first sliding columns to extend out of the first sliding grooves, and under the elastic force of the first spring, an end of each of the two symmetrically arranged first sliding columns extending out of the first sliding grooves is in contact with an inclined surface of a blade edge of the blade, and under the pressing force of the two first sliding columns, the blade cannot automatically slide downward out of the vertical slot; the push-pull mechanism comprises a push rod fixedly connected with the blade, a strip-shaped hole arranged on a side wall of the blade holder to allow the push rod to slide and make the blade extend out of the blade holder, and a convex ridge formed on the upper clamp arm, the convex ridge is arranged on an end surface of the upper clamp arm close to the blade holder, and the convex ridge can be clamped between a lower surface of the upper arm and the push rod. the fixing mechanism comprises an L-shaped limiting groove corresponding to the connecting strip formed on the convex block, the L-shaped limiting groove comprises a vertical part and a horizontal part, the vertical part penetrates through the convex block upwardly, and the horizontal part is arranged horizontally. the locking mechanism comprises a hook-shaped tooth formed on the second end of the lower clamp arm and a locking hole matched with the hook-shaped tooth formed on the second end of the upper clamp arm. elastic mechanisms are arranged on both side walls of the convex block to push the lower arm away from the convex block, the elastic mechanisms comprise second sliding grooves arranged along the thickness of the convex block and second sliding columns slidably arranged in the second sliding grooves, a second spring is arranged between the second sliding columns and a bottom wall of the second sliding grooves to force the second sliding columns to extend out of the second sliding grooves, and an end of each of the second sliding columns extending out of the second sliding grooves is provided with an inclined surface downwardly inclined. the second sliding grooves are below the L-shaped limiting groove. anti-skid ridges are protruded on a lower surface of the upper clamp arm and an upper surface of the lower clamp arm.

2. The umbilical cord scissors according to claim 1, characterized in that: ​ 3. The umbilical cord scissors according to claim 2, characterized in that: ​ 4. The umbilical cord scissors according to claim 3, characterized in that: ​ 5. The umbilical cord scissors according to claim 4, characterized in that: ​ 6. The umbilical cord scissors according to claim 5, characterized in that: ​

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