DE212019000505U1 - surgical clamp - Google Patents

Abstract

A surgical clamp comprising two clamp arms, a spring element having a spring force and a limit part;
the clamp arms include distal clamp ends, proximal actuation ends, and object clamp sides located on the clamp ends; the spring element is configured to connect the two clamping arms together at a proximal end; the restricting part is arranged at distal ends of the operating ends; characterized in that the restriction member includes a restriction groove located at a distal end of the operating end of at least one clamp arm, and a restriction pin shank slidably fitted into the restriction groove; that the limiter pin shank limitsly moves by pressing or releasing the operating ends in the limiter groove, so that the two clamp arms move reversibly between a clamped position and a release position and meanwhile realize an upper and lower position limit between the two clamp arms.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority from Chinese Patent Application No. 201910450277.7 , filed May 27, 2019, entitled "Surgical Clamp", the contents of which are hereby incorporated herein by reference in their entirety.

TECHNICAL AREA

This application relates to the field of medical devices and more particularly to a surgical clamp.

STATE OF THE ART

Aneurysms are localized or diffuse distending disease of the artery wall caused by disease or damage to the artery wall. The disease generally occurs in the main arteries, the aorta and the carotid arteries of the limbs. Cerebral aneurysm is a kind of tumor-like protrusion on the arterial wall caused by the local abnormal widening of the cerebral artery lumen. Once the cerebral aneurysm ruptures, subarachnoid hemorrhage occurs and, in severe cases, intracranial hematoma, which has a high mortality rate. Therefore, how effectively the aneurysm can be prevented from rupturing is of great importance in the treatment of aneurysm disease.

Currently, the main methods of treating aneurysms include intravascular interventional embolization therapy and surgical clamp surgery. In intravascular interventional embolization therapy, various treatment measures are carried out using catheter technology under X-ray control and based on diagnostic angiography. This therapy is less traumatic and easily accepted by the patients and has made good progress. However, the treatment of aneurysms in surgical procedures is not yet well developed, which is mainly attributed to insufficient clamping of the existing aneurysm clamps on the protruding portion of the blood vessel wall, making the aneurysms easy to rupture.

As it progresses, other angiomas have the problem that the bulging portions of the blood vessel wall are not clamped tightly, which easily leads to rupture of other angiomas.

SUMMARY

The present application provides a surgical clamp to solve the problem in the prior art that the protruding portions of the blood vessel wall in angiomas are not firmly clamped, which easily leads to rupture of other angiomas.

An example of this application is implemented in the following solution:

A surgical clamp comprises two clamp arms, a spring element with a spring force and a limit part; the clamp arms include distal clamp ends, proximal actuation ends, and object clamp faces located at the clamp ends; the spring element is configured to connect the two clamping arms together at a proximal end; the restricting part is arranged at distal ends of the operating ends; the restriction member includes a restriction groove located at the distal end of the operating end of at least one of the clamp arms, and a restriction pin shank slidably fitted into the restriction groove; by pressing or releasing the operating ends, the limiter pin shank moves in the limiter groove so that the two clamp arms move reversibly between a clamped position and a release position and meanwhile realize an upper and lower position limit between the two clamp arms.

When the restriction groove comprises a first restriction groove arranged at the distal end of the operation end of a first clamp arm and a second restriction groove arranged at the distal end of the operation end of a second clamp arm, the restriction pin shaft preferably slides in the first restriction groove and the second restriction groove to realize the upper and lower position restriction the first clamping arm and the second clamping arm and limiting the position of end positions of the two clamping arms when moving around the spring element, with a direction in which the first limiting groove and the second limiting groove are arranged being perpendicular to a plane of movement of the two clamping arms. The upper and lower position limiting is intended to prevent that there is too large a gap in the upper and lower directions during movement.

Preferably, during use of the surgical clamp, an included angle between the pair of clamp arms, ie, an included angle between the clamping ends of the surgical clamp, automatically changes according to one Changing a diameter of an object to be clamped, accompanied by synchronous and automatic sliding of the limiter pin shank in the first limiter groove and the second limiter groove. The beneficial effects are as follows: during the use of the surgical clamp, depending on the size of an angioma such as an aneurysm, the angioma can be clamped by using applicator forceps to adjust the opening angle of the surgical clamp; firstly, due to different diameters of the angiomas, the opening angle of the surgical clamp is adjusted by the applicator forceps, and as the opening angle of the surgical clamp gradually increases, the limit pin shaft in the surgical clamp automatically slides according to the opening angle of the surgical clamp; then, when the surgical clamp has a maximum opening angle, the limiter pin shank is automatically fixed at a specific position of the first limiter groove and the second limiter groove. On the other hand, when the surgical clamp clamps and closes the angioma, the applicator forceps is loosened, and the restoring force of the spring element causes the opening angle between the two clamp arms of the surgical clamp to gradually become symmetrically smaller, the limiting pin shank in the surgical clamp is automatically reduced according to the Surgical clamp angle adjusted; then, when the surgical clamp is at the minimum opening angle, the limiter pin shank is automatically fixed at another position of the first limiter groove and the second limiter groove; in operation, when the opening angle of the surgical clamp changes from an initial state to the maximum opening angle and then to the minimum opening angle, the limiter pin shank self-adaptingly slides in the first limiter groove and the second limiter groove and then is fixed at a certain position.

Preferably, when the limiter groove includes a one-side limiter groove provided at the distal end of the operating end of the first clamp arm, the limiter pin shaft is fixed to the second clamp arm; an opening direction of the one-side restriction groove is perpendicular to the plane of movement of the two clamp arms; the limiter pin shaft slides in the one-side limiter groove to realize the upper and lower position limiter between the first clamp arm and the second clamp arm and the position limiter of the end positions of the two clamp arms when moving around the spring member.

Preferably, during use, the opening angle between the two clamping arms changes, i. H. the opening angle between the clamping ends of the surgical clamp, automatically with the change in the diameter of the object to be clamped, accompanied by a synchronous and automatic displacement of the limit pin shank in the one-sided limit groove. The advantageous effects are as follows: during use of the surgical clamp according to a size of an angioma such as aneurysm, the angioma can be clamped using applicator forceps to adjust the opening angle of the surgical clamp; firstly, due to different diameters of the angioma, the opening angle of the surgical clamp is adjusted with the applicator forceps, and when the opening angle of the surgical clamp gradually increases, the limit pin shaft in the surgical clamp automatically slides according to the opening angle of the surgical clamp; then, when the surgical clamp has the maximum opening angle, the limit pin shaft automatically slides to a certain position of the one-side limit groove, then stops the movement and limits the positions of the two clamp arms. Second, when the surgical clamp clamps and closes the angioma, the applicator forceps is loosened and the restoring force of the spring member causes the opening angle of the surgical clamp to gradually decrease, the limit pin shaft in the surgical clamp is automatically adjusted according to the decreased angle of the surgical clamp; then, when the surgical clamp is in the minimum opening angle, the limit pin shaft automatically slides to another position of the one-side limit groove, then stops the movement and limits the positions of the two clamp arms; in operation, when the opening angle of the surgical clamp changes from the initial state to the maximum opening angle and then to the minimum opening angle, the limit pin shank self-adaptively slides in the one-side limit groove and then is fixed at a certain position.

When the limit pin shaft is at any position of the first clamp arm and the second clamp arm, the opening positions of the object clamping sides are preferably maintained to form a symmetrical structure with an axis of the surgical clamp as a center line (the reason for achieving a symmetrical opening is that the clamp has a symmetrical structure and thus, when the applier applies an external force to the clamp ends, the opening positions between the clamp ends can automatically maintain the symmetry). The positive effect is as follows: If the opening positions of the clamping ends have a symmetrical structure with the axis of the surgeon Forming a gical clamp as the center line, the object to be clamped, such as angioma, can be clamped well symmetrically, which improves the success rate of the operation.

Preferably, when the surgical clamp is in the home position, the spring member causes the two clamp arms to maintain an initial biasing force, and the object clamping sides of the two clamp arms are tightly closed and face each other; in operation, the two clamp arms are opened, overcoming the initial biasing force, to ensure that the surgical clamp clamps the object to be clamped.

Preferably, at least one of the two end parts of the limit pin shaft slides in the limit groove of the clamp arms; the end part is a flange, nut or bolt structure; the surgical clamp is provided with a depressed portion, and the depressed portion is located at an end surface of the limiting groove of the clamp arms, a position of an end surface of the limiting pin shank is lower than a contour surface of the two clamp arms of the surgical clip (the contour surface of the clamp arms denotes a plane that is parallel to a plane of movement of the two clamping arms and goes through contours of the clamping arms). The beneficial effect is that a height between the two ends of the limit pin shank is less than or equal to a vertical distance between the two clamp arms, avoiding the end face of the limit pin shank from touching the other part of the body during operation and causing adverse effects on the operation entails.

Preferably, a contact surface of the pair of clamp arms with the restriction groove at the distal ends of the operating ends is a flat plane. The advantageous effects are: (1) when the contact surface of the two clamp arms is a flat plane, it is favorable for smooth operation of the surgical clamp; (2) the position limitation of the limitation part on the two clamp arms becomes more reliable; and (3) the installation and position limitation of the limitation pin shaft will be reliable.

Preferably, the restricting part of the restricting arms is subjected to stamping processing. The advantageous effect of the stamping processing is that the contact surface with the limiter groove becomes a flat plane to realize reliable position limiter of the limiter parts on the two clamp arms, and meanwhile facilitate the assembly of the limiter pin shaft.

Preferably, the friction surface is provided with an evenly spaced tapered recessed portion, a horizontal stripe recessed portion, a longitudinal stripe recessed portion, or a crosswise recessed portion. The advantageous effect is that the clamping ability of the object clamping sides is improved by providing a depressed portion on the friction surface.

Preferably, the tapered recessed portion is a regular triangular pyramid, a regular quadrangular pyramid, or a regular pentagonal pyramid.

Preferably, the surgical clamp is an angioma clamp.

Preferably, the surgical clamp is an aneurysm clamp.

character list

• 1 ist ein schematisches Diagramm einer Anlegezange, die die chirurgische Klemme gemäß einer Ausführungsform der Anmeldung festklemmt;
• 2 ist eine Draufsicht auf eine chirurgische Klemme, die mit zwei Begrenzungsnuten gemäß einer Ausführungsform der Anmeldung versehen ist;
• 3 ist eine Seitenansicht der mit zwei Begrenzungsnuten versehenen chirurgischen Klemme gemäß einer Ausführungsform der Anmeldung;
• 4 ist eine Draufsicht einer chirurgischen Klemme, die mit einer Begrenzungsnut gemäß einer Ausführungsform der Anmeldung versehen ist;
• 5 ist eine Seitenansicht der chirurgischen Klemme, die mit einer Begrenzungsnut gemäß einer Ausführungsform der Anmeldung versehen ist;
• 6 ist ein schematisches Diagramm eines Begrenzungsstiftschafts, wenn zwei Begrenzungsnuten gemäß einer Ausführungsform der Anmeldung vorgesehen sind;
• 7 ist ein weiteres schematisches Diagramm eines Begrenzungsstiftschafts, wenn zwei Begrenzungsnuten gemäß der Ausführungsform der Anmeldung vorgesehen sind;
• 8 ist ein schematisches Diagramm eines Begrenzungsstiftschafts, wenn eine Begrenzungsnut vorgesehen ist, gemäß einer Ausführungsform der Anmeldung;
• 9 ist eine Vorderansicht (obere Seitenansicht) und eine Querschnittsansicht (untere Seitenansicht) einer Endfläche einer Objektklemmseite, die mit einem sich verjüngenden vertieften Abschnitt gemäß einer Ausführungsform der Anmeldung versehen ist;
• 10 ist eine Vorderansicht (obere Seitenansicht) und eine Querschnittsansicht (untere Seitenansicht) einer Endfläche einer Objektklemmseite, die mit einem horizontalen streifenförmigen vertieften Abschnitt gemäß einer Ausführungsform der Anmeldung versehen ist;
• 11 ist eine Vorderansicht (obere Seitenansicht) und eine Querschnittsansicht (untere Seitenansicht) einer Endfläche einer Objektklemmseite, die mit einem längsstreifenförmigen vertieften Abschnitt gemäß einer Ausführungsform der Anmeldung versehen ist; und
• 12 ist eine Vorderansicht (linke Seitenansicht) und eine Querschnittsansicht (rechte Seitenansicht) einer Endfläche einer Objektklemmseite, die mit einem kreuzweise vertieften Abschnitt gemäß einer Ausführungsform der Anmeldung versehen ist.

In order to explain more clearly the technical solutions of the embodiments of the present application, the drawings to be used in the embodiments of the present application are briefly presented below. It should be understood that the following drawings show only some embodiments of the present application and therefore should not be considered as limiting the scope. Other related drawings can be obtained from these drawings without creative work for those of ordinary skill in the art.

• 1 12 is a schematic diagram of an applicator forceps clamping the surgical clamp according to an embodiment of the application;
• 2 Fig. 12 is a plan view of a surgical clamp provided with two limiting grooves according to an embodiment of the application;
• 3 Fig. 12 is a side view of the surgical clamp provided with two limiting grooves according to an embodiment of the application;
• 4 12 is a plan view of a surgical clamp provided with a limiting groove according to an embodiment of the application;
• 5 13 is a side view of the surgical clamp provided with a limiting groove according to an embodiment of the application;
• 6 Figure 12 is a schematic diagram of a limit pin stem when two limits tongue grooves are provided according to an embodiment of the application;
• 7 12 is another schematic diagram of a limiter pin shank when two limiter grooves are provided according to the embodiment of the application;
• 8th 12 is a schematic diagram of a limiter pin shank when a limiter groove is provided, according to an embodiment of the application;
• 9 12 is a front view (upper side view) and a cross-sectional view (lower side view) of an end face of an object clamping side provided with a tapered depressed portion according to an embodiment of the application;
• 10 12 is a front view (upper side view) and a cross-sectional view (lower side view) of an end face of an object clamping side provided with a horizontal stripe-shaped recessed portion according to an embodiment of the application;
• 11 12 is a front view (upper side view) and a cross-sectional view (lower side view) of an end face of an object clamping side provided with a longitudinal stripe-shaped recessed portion according to an embodiment of the application; and
• 12 12 is a front view (left side view) and a cross-sectional view (right side view) of an end surface of an object clamping side provided with a cross recessed portion according to an embodiment of the application.

Reference List

1

spring element;

2, 3

two operating ends of the clamp arm;

4

limiting part;

5

limit pin stem;

6

limiting groove in the limiting part;

7, 8

two clamping ends of the clamp arm;

9

object clamping side.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

The technical solutions in the embodiments of the present application are described below in combination with the drawings in the embodiments of the present application.

1. Related definitions:

An end closer to an operator is the proximal end, and an end farther from the operation is the distal end.

Upper and lower position limitation refers to a transverse position limitation in an up and down direction; Up and down direction refers to a direction perpendicular to a relative direction of movement of two object clamping sides of the aneurysm.

2. Working principle:

When a surgical clamp is in an initial state, under a spring force of a spring member, two clamp arms of an aneurysm clamp touch in parallel and there is an initial biasing force, and the object clamp sides of the two clamp arms are tightly closed and face each other.

When the surgical clamp is in the working state, a clamp applying forceps clamps the operation ends of the two clamp arms of the surgical clamp and applies a force to them, forcing the clamp ends of the two clamp arms of the surgical clamp to open to achieve the purpose of clamping a to reach the object to be clamped.

Because the limit pin shank is always in limit grooves, when the clamping ends of the two clamp arms of the surgical clamp open, the limit grooves of the two clamp arms are forced to cross and fit up and down, effectively preventing a situation where the two clamp arms are misaligned, avoiding the clamping of foreign objects that are not solid.

3. Working process:

As in 1 As shown, when the clamp applying forceps continuously applies pressure to the surgical clip to clamp the object to be clamped, the clip applying forceps is released and the surgical clamp is clamped onto the object to be clamped. Due to the restoring force of the spring member, the clamping ends of the surgical clamp have a continuously reduced angle therebetween and gradually and steadily clamp the object to be clamped until the object to be clamped is completely clamped. At this time, the limiter pin shank slides in the limiter groove of the limiter piece and is finally fixed in a position that restricts the movement of the limiter tongue pin stops. Meanwhile, rotations of the clamp arms around the spring member are also stopped accordingly to achieve the effect of limiting the movement of the clamp arms.

When the applicator forceps continuously applies pressure to the surgical clamp, the clamping ends of the two clamp arms of the surgical clamp open continuously. At this time, the limiter pin shank slides continuously in the limiter groove of the limiter part. When the limiter pin shaft slides to the end of the limiter groove, its movement is restricted. At this time, a moving range of the limiter pin shaft reaches a limit and the limiter pin shaft stops moving. Meanwhile, the rotation of the clamp arms around the spring member is also stopped accordingly to achieve the effect of restricting the movement of the clamp arms.

4. Structure of surgical clamp:

According to the limit part, the surgical clamp is divided into two main parts; Ends closer to the operator are the operating ends of the clamp arms, and ends farther from the operator are the clamping ends of the clamp arms; the restriction groove and the restriction pin shank slidably fitted with the restriction groove are provided at the junction of distal ends of the operating ends of the two clamp arms and proximal ends of the clamping ends of the clamp arms; the distal ends of the operating ends of the clamp arms are a part where the clip applying forceps contacts the clamp arms; the distal ends of the clamping ends of the clamp arms are provided with the object clamping sides.

The spring element and the two clamping arms can be an integrated construction or a constructive construction in which the spring element is independent of the two clamping arms. The two clamping arms have a mirror-symmetrical structure; each individual clamp arm includes the following structures in order (described according to the distance from the operator from near to far): operating end of the clamp arm, limiting part on the clamp arm, and clamp end of the clamp arm.

Embodiment 1

Please refer 2 , a surgical clamp with two clamp arms, a spring element and a limit piece. The spring element is connected directly to the proximal ends of the two clamping arms. The two clamping arms are distributed symmetrically and have the same structure. The clamp arms include actuation ends, clamp ends, and object clamp sides. The limiting part is provided at the distal ends of the operating ends; the restriction member includes a restriction groove located at the distal end of the operating end of at least one of the clamp arms, and a restriction pin shank slidably fitted into the restriction groove; by pressing or releasing the actuating ends, the limiter pin shank moves limited in the limiter groove, allowing the two clamp arms to reversibly move between a clamped position and a release position, and meanwhile the object clamping sides of the two clamp arms completely overlap without misalignment:

• Wobei das Federelement ein Element mit Federkraft ist, beispielsweise eine Feder mit 1,5 Windungen oder andere federnde Drähte und Platten.

There are two specific parallel structures:

• Wherein the spring element is an element with spring force, for example a spring with 1.5 turns or other springy wires and plates.

Structure 1: The restricting member includes a first restricting groove at the distal end of the operating end of the first clamp arm, a second restricting groove at the distal end of the operating end of the second clamp arm, and a movable restricting pin shaft.

• 11) Der Begrenzungsstiftschaft ist eine Struktur mit einem Stiftschaft und Flanschen an beiden Enden des Stiftschafts:
  • der Begrenzungsstiftschaft klemmt die beiden Klemmarme in einer Auf- und Abwärtsrichtung durch den Stiftschaft und die Flansche an beiden Enden des Stiftschafts; die chirurgische Klemme ist mit einem vertieften Bereich versehen, so dass in einer Ebene senkrecht zu einer Bewegungsebene der beiden Klemmarme eine Position einer Stirnfläche des Begrenzungsstiftschafts niedriger ist als eine Konturfläche der Klemmarme. Eine wirksame Länge des Stiftschaftes ist größer als ein Abstand zwischen den beiden Klemmarmen in vertikaler Richtung (die vertikale Richtung bezieht sich auf eine Richtung senkrecht zur Bewegungsebene der beiden Klemmarme), d. h. es gibt eine Raumspanne, die dafür reserviert ist, dass der Begrenzungsstiftschaft in der ersten und zweiten Begrenzungsnut gleiten kann.
• 12) Der Begrenzungsstiftschaft ist eine Struktur, bei der ein Bolzen und eine Mutter zusammenwirken:
  • ein Ende des Bolzens und die Mutter bilden eine begrenzende feste Struktur, und die beiden Klemmarme sind zwischen dem Ende des Bolzens und der Mutter angeordnet; die chirurgische Klemme ist mit einem vertieften Bereich versehen und die Position der Stirnfläche des Begrenzungsstiftschafts ist niedriger als die Konturfläche der beiden Klemmarme der chirurgischen Klemme. Die Länge der Bolzenkörper zwischen Mutter und Bolzen ist größer als der Abstand zwischen den beiden Klemmarmen in vertikaler Richtung plus der Abstand der Mutter in vertikaler Richtung, d. h. es gibt eine Raumspanne, die dafür reserviert ist, dass der Begrenzungsstiftschaft in der ersten und zweiten Begrenzungsnut gleiten kann.
• 13) Wie oben ist der Begrenzungsstiftschaft eine Struktur, bei der ein Ende ein Flansch ist und das andere Ende ein Stiftschaft ist, der mit einer Mutter versehen ist;
  • ein Ende der Mutter und der Flansch bilden eine begrenzende feste Struktur, und die beiden Klemmarme sind zwischen dem Ende der Mutter und dem Flansch angeordnet; die chirurgische Klemme ist mit einem vertieften Bereich versehen, so dass in einer Ebene senkrecht zu einer Bewegungsebene der beiden Klemmarme die Lage der Stirnfläche des Begrenzungsstiftschaftes niedriger als die Konturfläche der Klemmarme ist.
• 14) Wie oben ist der Begrenzungsstiftschaft eine Struktur, bei der ein Ende ein Flansch ist und das andere Ende eine Stiftschaftstruktur ist, die mit einem Bolzen versehen ist; ein Ende des Bolzens und der Flansch bilden eine begrenzende feste Struktur, und die beiden Klemmarme sind zwischen dem Ende des Bolzens und dem Flansch angeordnet; die chirurgische Klemme ist mit einem vertieften Bereich versehen, so dass auf einer Ebene senkrecht zur Bewegungsebene der beiden Klemmarme die Lage der Stirnfläche des Begrenzungsstiftschaftes tiefer liegt als die Konturfläche der Klemmarme.

An end of the limit pin shank sliding in the first or second limit groove is a flange, bolt, nut or other stepped limit structure, including one of the following several situations:

• 11) Limiting pin shank is a structure with a pin shank and flanges on both ends of the pin shank:
  • the limit pin shaft clamps the two clamp arms in an up and down direction by the pin shaft and the flanges at both ends of the pin shaft; the surgical clamp is provided with a depressed portion such that a position of an end surface of the limiter pin shank is lower than a contour surface of the clamp arms in a plane perpendicular to a moving plane of the two clamp arms. An effective length of the pin shank is greater than a distance between the two clamp arms in the vertical direction (the vertical direction refers to a direction perpendicular to the plane of movement of the two clamp arms), that is, there is a margin of space reserved for the limit pin shank in the first and second limiting groove can slide.
• 12) The limit pin shank is a structure where a bolt and nut work together:
  • one end of the bolt and the nut form a confining fixed structure, and the two clamp arms are located between the end of the bolt and the nut; the surgical clamp is provided with a depressed area, and the position of the front surface of the limiter pin shaft is lower than the contour surface of the two clamp arms of the surgical clamp. The length of the bolt body between the nut and the bolt is greater than the distance between the two clamp arms in the vertical direction plus the distance of the nut in the vertical direction, that is, there is a space reserved for the limiter pin shank to slide in the first and second limiter grooves can.
• 13) As above, the limiter pin shank is a structure in which one end is a flange and the other end is a pin shank fitted with a nut;
  • one end of the nut and the flange form a confining fixed structure, and the two clamping arms are located between the end of the nut and the flange; the surgical clamp is provided with a depressed area so that in a plane perpendicular to a plane of movement of the two clamp arms, the position of the end face of the limiter pin shank is lower than the contour surface of the clamp arms.
• 14) As above, the limiter pin shank is a structure in which one end is a flange and the other end is a pin shank structure provided with a bolt; one end of the bolt and the flange form a confining fixed structure, and the two clamping arms are located between the end of the bolt and the flange; the surgical clamp is provided with a recessed area so that, on a plane perpendicular to the plane of movement of the two clamp arms, the position of the end face of the limiter pin shank is lower than the contoured surface of the clamp arms.

Structure 2: the restricting member includes a one-side restricting groove provided at the distal end of the operating end of the first clamp arm and the restricting pin shaft fixedly provided on the second clamp arm;
More specifically, the limiter pin shank is a structure in which one end is fixed and the other end, which slides in the one-side limiter groove, is provided with a flange, bolt, nut or other stepped shape for positional limiter.

The limit pin shank is a structure in which a clamp arm (or the other clamp arm) is fixed by the pin shank, and the flange, bolt, nut or other stepped shape of the other end of the limit pin shank is used to perform position limitation; the surgical clamp is provided with a depressed portion so that the position of the front surface of the limiter pin shaft is lower than the contour surface of the two clamp arms of the surgical clamp.

In the above structure, the limiter pin shank is fixed after being inserted into the limiter groove, and then the limiter pin shank is used to limit the two clamp arms in the upper and lower positions to ensure that the two clamp arms are not misaligned during movement that the two object clamping sides of the clamp arms overlap completely, which can effectively clamp the tumorous protrusion on the artery wall and meanwhile limit the limit positions of the movement of the two clamp arms around the spring member.

Embodiment 2

• 21) Wenn die beiden Klemmarme mit Begrenzungsnuten versehen sind, gleitet der Begrenzungsstiftschaft gleichzeitig in der ersten und zweiten Begrenzungsnut, die Öffnungspositionen der Objektklemmseiten werden als eine symmetrische Struktur mit der Achse der chirurgischen Klemme als Mittellinie beibehalten. Der Grund für das Erzielen einer symmetrischen Öffnung besteht darin, dass die Klemme einen symmetrischen Aufbau hat, und somit können die Öffnungspositionen der Klemmenden automatisch die Symmetrie beibehalten, wenn eine äußere Kraft auf die Klemmenden durch eine Anlegezange ausgeübt wird.
• 22) Wenn nur ein Klemmarm mit der Begrenzungsnut versehen ist, ist der Begrenzungsstiftschaft an einem Klemmarm befestigt und wenn der Begrenzungsstiftschaft in der Begrenzungsnut des anderen Klemmarms gleitet und die Öffnungspositionen der Objektklemmseiten werden so beibehalten, dass eine symmetrische Struktur mit der Achse der chirurgischen Klemme als Mittellinie gebildet wird. (Der Grund für das Erzielen eines symmetrischen Öffnens ist, dass die Klemme eine symmetrische Struktur hat und somit, wenn eine externe Kraft auf die Klemmenden durch die Anlegezange ausgeübt wird, die Öffnungsposition der Klemmenden automatisch die Symmetrie beibehalten kann).

Based on Embodiment 1, when the limiter pin shaft is at any position of the first clamp arm and the second clamp arm, the opening positions of the object clamp sides are maintained to form a symmetrical structure with an axis of the surgical clamp as a center line. There are two situations:

• 21) When the two clamp arms are provided with limit grooves, the limit pin shaft slides in the first and second limit grooves simultaneously, the opening positions of the object clamp sides are maintained as a symmetrical structure with the axis of the surgical clamp as the center line. The reason for achieving a symmetrical opening is that the clip has a symmetrical structure, and thus the opening positions of the clip ends can automatically keep the symmetry when an external force is applied to the clip ends by an applicator forceps.
• 22) When only one clamp arm is provided with the limitation groove, the limitation pin shaft is fixed to one clamp arm, and when the limitation pin shaft slides in the limitation groove of the other clamp arm, and the opening positions of the object clamping sides are changed maintain the so that a symmetrical structure is formed with the axis of the surgical clamp as the center line. (The reason for achieving symmetric opening is that the clamp has a symmetrical structure, and thus when an external force is applied to the clamp ends by the applier, the opening position of the clamp ends can automatically maintain the symmetry).

Embodiment 3

• 31) Beim Einsatz der chirurgischen Klemme wird der Öffnungswinkel zwischen den beiden Klemmarmen, d. h. der Öffnungswinkel zwischen den Klemmenden der chirurgischen Klemme entsprechend dem Durchmesser des zu klemmenden Objektes eingestellt, einhergehend mit dem synchronen und automatischen Gleiten des Begrenzungsstiftschafts in der ersten Begrenzungsnut und der zweiten Begrenzungsnut.
• 32) Beim Einsatz der chirurgischen Klemme wird der Öffnungswinkel zwischen den beiden Klemmarmen, d. h. der Öffnungswinkel zwischen den Klemmenden der chirurgischen Klemme entsprechend dem Durchmesser des zu klemmenden Objektes eingestellt, einhergehend mit dem synchronen und automatischen Gleiten des Begrenzungsstiftschaftes in der einseitigen Begrenzungsnut.

Sliding of the limiter pin shank in the limiter groove includes two situations:

• 31) When using the surgical clamp, the opening angle between the two clamp arms, that is, the opening angle between the clamping ends of the surgical clamp, is adjusted according to the diameter of the object to be clamped, accompanied by the synchronous and automatic sliding of the limit pin shaft in the first limit groove and the second limit groove .
• 32) When using the surgical clamp, the opening angle between the two clamp arms, that is, the opening angle between the clamping ends of the surgical clamp, is adjusted according to the diameter of the object to be clamped, accompanied by the synchronous and automatic sliding of the limit pin shaft in the one-side limit groove.

Embodiment 4

Based on the above embodiment, a specific operation of coining the clamp ends is as follows: coining the upper and lower positions of the restricting part on the clamp arms and forming a contact surface parallel to the plane of movement of the clamp arms on both sides of the clamp arms.

Embodiment 5

Due to the above embodiment, by calculating the length of the limiting groove, the opening angle between the clamp arms can be limited, which ensures that the two clamp arms of the aneurysm clamp are not opened indefinitely and thus lead to failure. A spring element is arranged at the end to ensure that the aneurysm clip is in a tightly closed condition in the starting position.

Embodiment 6

According to the above embodiment, the object clamping sides are each provided with a friction surface; the friction surface is designed with an evenly spaced tapered depressed section (as in 9 shown), a horizontal stripe-shaped recessed section (as in 10 shown), an elongate strip-shaped recessed section (as in 11 shown) or a cross-depressed section (as in 12 shown). The functional modules in the various embodiments of the present application can be integrated with each other to form an independent part, or each module can exist alone, or two or more modules can be integrated to form an independent part.

The above descriptions are only examples of the present application and are not used to limit the scope of the present application. Various modifications and changes may be made to the present application for those skilled in the art. Any modification, equivalent substitution and improvement made in accordance with the spirit and principle of this application fall within the scope of protection of this application. It should be noted that similar reference numbers and letters indicate similar items in the following figures. Therefore, once an article is defined in a figure, it need not be further defined and explained in subsequent figures.

The above are just specific implementations of this application, but the scope of this application is not limited to them. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application, which should fall within the scope of this application. Therefore, the scope of protection of this application is subject to the scope of protection of the claims.

It should be noted that in this article, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that such an actual relationship or ordering between those entities or operations. Additionally, the terms "include" and "comprise" or any other variation thereof are intended to cover non-exclusive inclusion such that a process, method, article or device having a series of Elements includes not only these elements, but also other elements that are not clearly listed, or also includes elements inherent in that process, procedure, article or device. When restrictions no longer exist, an element defined by the phrase "including a..." does not preclude the existence of another like element in the process, procedure, article, or device that the element excludes.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• CH201910450277 [0001]

Claims (14)

A surgical clamp comprising two clamp arms, a spring element having a spring force and a limit part; the clamp arms include distal clamp ends, proximal actuation ends, and object clamp sides located on the clamp ends; the spring element is configured to connect the two clamping arms together at a proximal end; the restricting part is arranged at distal ends of the operating ends; characterized in that the restriction member comprises a restriction groove located at a distal end of the operating end of at least one clamp arm, and a restriction pin shank slidably fitted into the restriction groove; that the limiter pin shank limitsly moves by pressing or releasing the operating ends in the limiter groove, so that the two clamp arms move reversibly between a clamped position and a release position and meanwhile realize an upper and lower position limit between the two clamp arms. Surgical clamp after claim 1 , characterized in that when the restriction groove comprises a first restriction groove arranged at the distal end of the operating end of the first clamp arm and a second restriction groove arranged at the distal end of the operation end of the second clamp arm, the restriction pin shaft slides in the first restriction groove and the second restriction groove to the upper and lower position limitation between the first clamping arm and the second clamping arm and the position limitation of the end positions of the two clamping arms when moving around the spring element, the first limiting groove and the second limiting groove being arranged in a direction perpendicular to a plane of movement of the two clamping arms. Surgical clamp after claim 2 , characterized in that during use of the surgical clamp, an opening angle between the two clamp arms, that is, an opening angle between the clamping ends of the surgical clamp, changes automatically according to a diameter of an object to be clamped, accompanied by synchronous and automatic sliding of the Delimitation pin shaft in the first delimitation groove and the second delimitation groove. Surgical clamp after claim 1 , characterized in that when the restriction groove comprises a one-sided restriction groove provided at the distal end of the operating end of the first clamp arm, the restriction pin shaft is fixed to the second clamp arm; an opening direction of the one-side restriction groove is perpendicular to a moving plane of the two clamp arms; the restriction pin shaft slides in the one-side restriction groove to realize the upper and lower position restriction between the first clamp arm and the second clamp arm and the position restriction of end positions of the two clamp arms in the movement around the spring member. Surgical clamp after claim 4 , characterized in that during use of the surgical clamp, an opening angle between the two clamp arms, that is, an opening angle between the clamping ends of the surgical clamp, changes automatically according to a diameter of an object to be clamped, accompanied by synchronous and automatic sliding of the limiting pin shank in the one-sided limiting groove. Surgical clamp according to one of the Claims 1 until 5 characterized in that when the limiter pin shaft is at any position of the first clamp arm and the second clamp arm, the opening positions of the object clamp sides are maintained to form a symmetrical structure with an axis of the surgical clamp as a center line. Surgical clamp after claim 6 characterized in that when the surgical clamp is in a home position, the spring element causes the two clamp arms to maintain an initial biasing force and the object clamping sides of the two clamp arms to be firmly closed and facing each other; that in operation the two clamp arms are opened by overcoming the initial biasing force to ensure that the surgical clamp clamps the object to be clamped. Surgical clamp after claim 1 , 2 , 3 , 4 , 5 or 7 , characterized in that at least one end part of two end parts of the limiter pin shaft slides in the limiter groove of the clamp arms; the end part is a flange, nut or bolt structure; the surgical clamp is provided with a depressed portion and the depressed portion is on an end surface of the limiting groove of the clamp arms, a position of an end surface of the limiting pin shank is lower than a contour surface of the two clamp arms of the surgical clamp. Surgical clamp after claim 8 , characterized in that a contact surface of the two clamp arms with the restriction groove at the distal ends of the operating ends is a flat plane. Surgical clamp after claim 1 , 2 , 3 , 4 , 5 , 7 or 9 , characterized in that the restricting part of the restricting arms is subjected to stamping processing. Surgical clamp after claim 10 , characterized in that the object clamping sides are each provided with a friction surface; the friction surface is provided with an evenly distributed tapered recessed portion, a horizontal stripe recessed portion, an elongated stripe recessed portion or a crosswise recessed portion. Surgical clamp after claim 1 , 2 , 3 , 4 , 5 , 7 , 9 or 11 characterized in that the tapered depressed portion is a regular triangular pyramid, a regular quadrangular pyramid or a regular pentagonal pyramid. Surgical clamp after claim 12 , characterized in that the surgical clamp is an angioma clamp. Surgical clamp after claim 12 , characterized in that the surgical clamp is an aneurysm clamp.

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