Sealing sleeve and puncture outfit

Abstract

The invention discloses a sealing sleeve and a puncture outfit. The sealing sleeve comprises a sealing body and a mounting convex edge, the sealing body comprises a sealing cylinder and a plurality of sealing flaps, the sealing cylinder is provided with an upper end opening and a lower end opening, the surgical instrument sequentially penetrates through the upper end opening and the lower end opening when being inserted inwards, and the upper end of each sealing flap is connected with the edge of the lower end opening. The lower ends of the sealing flaps are matched with each other to seal the lower end opening, and the sealing flaps deform to open the lower end opening in response to insertion of a surgical instrument; each sealing flap is provided with a top surface and a bottom surface which are opposite to each other, the bottom surface is provided with a first convex rib structure, the first convex rib structure extends from the upper edge of the bottom surface to the lower edge of the bottom surface, and the lower end of each first convex rib structure is correspondingly arranged. The first convex rib structures abut against one another to prevent the lower ends of the sealing petals from turning towards the openings in the upper ends, and then the sealing petals are prevented from turning inwards.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a sealing sleeve and a puncture device. Background Art

[0002] The trocar is an indispensable surgical instrument in abdominal examination, abdominal surgery and other minimally invasive or surgical operations. The trocar can establish an entry channel in the abdominal wall of the human body so that a laparoscope or other surgical instruments (such as an endoscope, scissors, staplers, guide wires, catheters, filters, stents, etc.) can enter the abdominal cavity, and provide a channel for gas to enter and exit to control the pneumoperitoneum required for the operation, so as to perform an examination or surgical operation. At the beginning of a minimally invasive laparoscopic medical operation, the doctor generally first makes a small incision in the patient's abdomen, and then aligns the vertex of the puncture end with the small incision and moves it back and forth while moving downward, so that the puncture cannula passes through the patient's abdominal cortex. After the puncture is completed, the puncture core rod of the trocar is pulled out, so that the puncture cannula becomes a channel for surgical instruments to enter the patient's abdominal cavity and to inflate the patient's abdominal cavity.

[0003] In order to prevent surgical instruments from entering the patient's abdominal cavity and air leakage when inflating the patient's abdominal cavity, a sealing device needs to be provided in the puncture device. The sealing device includes a sealing sleeve, which is used in the puncture device. The puncture sleeve has a through hole. First, the puncture core penetrates the human epidermis, and then the puncture core is pulled out and air is injected to form pneumoperitoneum. After pneumoperitoneum, the surgical instrument is inserted from the puncture sleeve for cutting and segmentation. The sealing sleeve is used to seal the through hole of the puncture sleeve to maintain air tightness during the insertion and removal of the surgical instrument. When the surgical instrument is inserted, the sealing sleeve opens for the surgical instrument to pass through and fits the outer wall of the surgical instrument; when the surgical instrument is pulled out, the sealing sleeve closes. When the surgical instrument is pulled out, it is easy for the surgical instrument to drive the sealing sleeve to move, and the sealing sleeve flips upward and turns inward. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention aims to provide a sealing sleeve and a puncture device, which solve the problem that the sealing sleeve in the prior art is easily turned inward during use.

[0005] The present invention is achieved through the following technical solutions: a sealing sleeve, comprising a sealing body and an installation flange, the sealing body comprising a sealing cylinder and a plurality of sealing petals, the installation flange being connected to the upper edge of the sealing cylinder, the sealing cylinder having an upper opening and a lower opening, when the surgical instrument is inserted inward, it passes through the upper opening and the lower opening in sequence, the upper end of each sealing petal is connected to the edge of the lower opening, the lower end of each sealing petal cooperates with each other to close the lower opening, in response to the insertion of the surgical instrument, each sealing petal deforms to open the lower opening; each sealing petal has a top surface and a bottom surface facing each other, the bottom surface is provided with a first convex rib structure, the first convex rib structure extends from the upper edge of the bottom surface to the lower edge of the bottom surface, and the lower ends of each first convex rib structure are correspondingly arranged, when the surgical instrument is pulled outward, each first convex rib structure abuts against each other to prevent the lower end of each sealing petal from flipping toward the upper opening.

[0006] Furthermore, each sealing flap has at least one first rib structure.

[0007] When there is one first convex rib structure, the first convex rib structure is located in the middle of the sealing petal;

[0008] When there are multiple first rib structures, the multiple first rib structures are arranged at intervals and at least one first rib structure is located in the middle of the bottom surface.

[0009] Furthermore, the thickness of the sealing flap is the same at all locations.

[0010] Furthermore, the sealing cylinder is provided with a plurality of limiting protrusions, each of which radially protrudes from the inner side surface of the sealing cylinder, and each of which is located on the upper side of the sealing flap to prevent the lower end of the sealing flap from flipping toward the upper end opening.

[0011] Furthermore, the lower ends of two adjacent sealing petals are fitted together to form a fitting portion, and the limiting protrusion is located on the upper side of the fitting portion to prevent the lower ends of the two adjacent sealing petals from flipping toward the upper opening.

[0012] Further, the limiting protrusion extends along the axial direction of the sealing cylinder; or

[0013] The limiting protrusion extends in a direction perpendicular to the axial direction of the sealing cylinder; or

[0014] The limiting protrusion extends along the circumference of the sealing cylinder.

[0015] Furthermore, the top surface is provided with a second convex rib structure, and the second convex rib structure extends from the upper edge of the top surface to the lower edge of the top surface.

[0016] Furthermore, the second convex rib structure includes a first convex rib and at least one second convex rib, the first convex rib and the second convex rib are arranged at intervals and the first convex rib is located in the middle position of the top surface.

[0017] Furthermore, the sealing sleeve includes an extension portion, and the lower end of each sealing petal is connected to the extension portion and cooperates with each other through the extension portion. The extension portion is provided with a bottom opening, and the bottom opening is connected to the lower end opening. When the bottom opening is closed, the lower end opening is closed, and when the bottom opening is opened, the lower end opening is opened. In response to the insertion of the surgical instrument, each sealing petal is deformed to open the bottom opening, and then open the lower end opening. The first rib structure extends from the upper end of the bottom surface to the extension portion.

[0018] Furthermore, there are two sealing flaps, which are symmetrically arranged; or

[0019] There are three sealing petals, and the lower edges of the three sealing petals are arranged in a Y shape; or

[0020] There are four sealing petals, and the lower edges of the four sealing petals are arranged in a cross shape; or

[0021] The number of sealing petals is greater than four.

[0022] The present invention also provides a sealing sleeve, comprising a sealing body and an installation flange, the sealing body comprising a sealing cylinder and a plurality of sealing petals, the installation flange is connected to the upper edge of the sealing cylinder, the sealing cylinder has an upper opening and a lower opening, when the surgical instrument is inserted inward, it passes through the upper opening and the lower opening in sequence, the upper end of each sealing petal is connected to the edge of the lower opening of the sealing cylinder, the lower ends of each sealing petal cooperate with each other to close the lower opening, in response to the insertion of the surgical instrument, each sealing petal deforms to open the lower opening; the sealing cylinder is provided with a plurality of limiting protrusions, each limiting protrusion radially protrudes from the inner side surface of the sealing cylinder, each limiting protrusion is located on the upper side of the sealing petal to prevent the lower end of the sealing petal from flipping toward the upper opening.

[0023] Furthermore, the lower ends of two adjacent sealing petals are fitted together to form a fitting portion, and the limiting protrusion is located on the upper side of the fitting portion to prevent the lower ends of the two adjacent sealing petals from flipping toward the upper opening.

[0024] Furthermore, each sealing flap has a top surface and a bottom surface facing each other, and the bottom surface is provided with a first convex rib structure, which extends from the upper edge of the bottom surface to the lower edge of the bottom surface.

[0025] Furthermore, each sealing flap has at least one first rib structure.

[0026] When there is one first convex rib structure, the first convex rib structure is located in the middle of the sealing petal;

[0027] When there are multiple first rib structures, the multiple first rib structures are arranged at intervals and at least one first rib structure is located in the middle of the bottom surface.

[0028] Furthermore, the thickness of the sealing flap is the same at all locations.

[0029] Furthermore, the top surface is provided with a second convex rib structure, and the second convex rib structure extends from the upper edge of the top surface to the lower edge of the top surface.

[0030] Furthermore, the second convex rib structure includes a first convex rib and at least one second convex rib, the first convex rib and the second convex rib are arranged at intervals and the first convex rib is located in the middle position of the top surface.

[0031] The present invention also provides a puncture device, comprising a sleeve assembly and a puncture core rod which is removably arranged in the sleeve assembly, and the sleeve assembly comprises the above-mentioned sealing sleeve.

[0032] Compared with the prior art, the beneficial effect of the present invention is that: the sealing sleeve of the present invention is provided with a first convex rib structure on the bottom surface of the sealing flap, the first convex rib structure extends from the upper end of the bottom surface to the lower end of the bottom surface and the lower end of each first convex rib structure is provided correspondingly, so that the force of closing the sealing flap can be increased, so that the sealing flap can be quickly closed to prevent air leakage when the surgical instrument is pulled out, and when the surgical instrument drives the sealing flap to flip upward, the lower ends of each first convex rib structure will abut against each other, thereby preventing the sealing flap from turning inward. The setting of the limiting protrusion can play the role of limiting the inward turning of the sealing flap. The lower end of the limiting protrusion contacts the top surface of the sealing flap and the limiting stopper turns the sealing flap inward, so that the sealing flap cannot continue to turn inward and then returns to the initial state under the action of its own elastic force. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of a sealing sleeve at an angle in an embodiment provided by a specific embodiment of the present invention;

[0034] Figure 2 is a cross-sectional view of a sealing sleeve in an embodiment provided by a specific embodiment of the present invention;

[0035] Figure 3 is a schematic structural diagram of a sealing sleeve from another angle in an embodiment provided by a specific implementation manner of the present invention;

[0036] Figure 4 is a schematic structural diagram of a sealing sleeve in another embodiment provided in a specific embodiment of the present invention;

[0037] Figure 5 is a schematic structural diagram of a sealing sleeve in another embodiment provided in a specific embodiment of the present invention;

[0038] Figure 6 It is an exploded view of a puncture device in an embodiment provided by a specific embodiment of the present invention.

[0039] The above drawings include the following reference numerals:

[0040] 10. Sealing body; 11. Sealing cylinder; 111. Limiting protrusion; 12. Sealing flap; 121. Top surface; 122. Bottom surface; 123. First convex rib structure; 124. Second convex rib structure; 1241. First convex rib; 1242. Second convex rib; 125. Extension portion; 20. Mounting flange; 30. Sealing sleeve; 40. Piercing core rod; 50. Sleeve assembly. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] It should be understood that the terms "upper" and "lower" used herein refer to the relative positions of the mounting flange of the sealing sleeve and the sealing body. Specifically, the mounting flange is "upper" and the sealing body is "lower". However, the trocar can be used in many directions and positions, so these terms expressing relative positional relationships are not limited and absolute.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms such as "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a movably connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements such as abutment. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be noted that when there are qualifiers before "connected" and "connection", they have the meaning defined by the corresponding qualifiers, and only exclude situations that obviously need to be excluded, and do not exclude other possible situations. For example, "detachably connected" refers to a detachable connection, and does not include integration, but movable connection, etc. are not excluded.

[0044] In the present invention, a plurality refers to at least two.

[0045] Embodiment 1

[0046] See also Figures 1 to 4The sealing sleeve includes a sealing body 10 and a mounting flange 20. The sealing body 10 includes a sealing cylinder 11 and a plurality of sealing petals 12. The mounting flange 20 is connected to the upper edge of the sealing cylinder 11. The sealing cylinder 11 has an upper opening and a lower opening. When the surgical instrument is inserted inward, it passes through the upper opening and the lower opening in sequence. Each sealing petal 12 is connected to the lower opening of the sealing cylinder 11, and the lower ends of each sealing petal 12 cooperate with each other to close the lower opening. In this embodiment, the lower ends of each sealing petal 12 cooperate with each other, which means that the lower ends of each sealing petal 12 fit each other. In response to the insertion of the surgical instrument, each sealing petal 12 is deformed so that the lower ends of each sealing petal 12 are no longer fitted to open the lower opening. Specifically, when the puncture core rod, stapler or other surgical instrument is inserted, under the force applied by the puncture core rod, stapler or other surgical instrument, a plurality of sealing petals 12 separate from each other, so that the lower opening is opened, and a channel for the insertion of the surgical instrument is formed inside the puncture sleeve. Each sealing flap 12 has a top surface 121 and a bottom surface 122 facing each other, and the top surface 121 and the bottom surface 122 are respectively located on both sides of the thickness direction of the sealing flap 12, and the top surface 121 is arranged toward the upper end opening of the sealing cylinder, and the bottom surface 122 is provided with a first convex rib structure 123, and the first convex rib structure 123 extends from the upper edge of the bottom surface 122 to the lower edge of the bottom surface 122, and the lower ends of each first convex rib structure 123 are arranged correspondingly. When the surgical instrument is pulled out, the first convex rib structures 123 abut against each other to prevent the lower end of each sealing flap 12 from turning toward the upper end opening, thereby preventing each sealing flap 12 from turning inward when the surgical instrument is pulled out, resulting in the lower end opening being unable to be closed.

[0047] The sealing sleeve of the present invention is provided with a first rib structure 123 on the bottom surface 122 of the sealing flap 12. The first rib structure 123 extends from the upper edge of the bottom surface 122 to the lower edge of the bottom surface 122 and the lower ends of the first rib structures 123 are provided correspondingly, so that the closing force of the sealing flap 12 can be increased, so that the sealing flap 12 is quickly closed to prevent air leakage when the surgical instrument is pulled out. When the surgical instrument is pulled out and drives the sealing flap 12 to have a tendency to flip upward, the lower ends of the first rib structures 123 will abut against each other, thereby preventing the sealing flap 12 from turning inward. In this embodiment, the corresponding provision of the lower ends of the first rib structures 123 means that the lower ends of the first rib structures 123 of each sealing flap 12 are gathered at the lower edge of the bottom surface 122 of the sealing flap 12. When the sealing flap 12 has a tendency to turn inward, the lower edges of the sealing flaps 12 turn upward, and the first rib structures 123 corresponding to each other abut against each other to prevent the sealing flap 12 from turning inward. Mutual abutment means that the first rib structures 123 directly abut against each other to generate mutual force, or the first rib structures 123 do not directly abut against each other but generate mutual force.

[0048] It should be noted that when the lower opening is closed, the first rib structures 123 abut against each other or do not directly abut against each other. When the sealing sleeve has a tendency to turn inward, the lower edge of each sealing flap 12 moves toward the upper opening, and the first rib structures 123 abut against each other, thereby improving the anti-inversion ability of each sealing flap 12, blocking the inversion movement of each sealing flap 12, and preventing the sealing flap 12 from turning inward.

[0049] It should be noted that the "upper end" and "lower end", "top surface 121" and "bottom surface 122" mentioned here are based on the puncture direction of the puncture device. The direction from the "upper end" to the "lower end" is the puncture direction of the puncture device. Similarly, the direction from the "top surface 121" to the "bottom surface 122" is also the puncture direction of the puncture device.

[0050] In this embodiment, the sealing sleeve may be made of elastic materials such as isoprene or silicone.

[0051] In this embodiment, the sealing cylinder 11 and the sealing flap 12 are integrally formed. Correspondingly, the sealing body 10 and the mounting flange 20 are also integrally formed. Of course, the sealing cylinder 11 and the sealing flap 12, and the sealing body 10 and the mounting flange 20 can also be connected by other means such as bonding, which can be selected according to actual needs.

[0052] Specifically, when the puncture core rod, stapler or other surgical instrument is inserted, under the force applied by the puncture core rod, stapler or other surgical instrument, the multiple sealing flaps 12 are separated from each other, so that the lower end opening of the sealing cylinder 11 is opened, and a channel for gas circulation is formed inside the puncture sleeve. At this time, the lower end edges of the multiple sealing flaps 12 are closely matched with the inserted puncture core rod, stapler or other surgical instrument to perform sealing. When the puncture core rod, stapler or other surgical instrument is pulled out, the force applied by the puncture core rod, stapler or other surgical instrument disappears, and the multiple sealing flaps 12 are automatically closed under the action of their own elastic restoring force. At this time, the lower end edges of the multiple sealing flaps 12 are attached to each other, the lower end opening of the sealing cylinder 11 is closed by the multiple sealing flaps 12, and the airflow above and below the multiple sealing flaps 12 cannot circulate, thereby achieving the sealing between the human abdominal cavity and the external environment. At the same time, the lower end of the first rib structure 123 on the sealing flap 12 is correspondingly arranged to prevent the surgical instrument from driving the sealing flap 12 to fold inward when it is pulled out.

[0053] In a preferred embodiment, the lower end faces of each first rib structure 123 are mutually abutting surfaces, and the lower end faces of each first rib structure 123 are arranged at an angle. Specifically, when the lower end opening of the sealing cylinder 11 is closed, the lower end faces of each first rib structure 123 are located in the same plane, and the angle formed by the lower end faces of each first rib structure 123 is 180°. Through the above arrangement, when the surgical instrument drives the sealing flap 12 to flip upward, the lower end faces of each first rib structure 123 will abut against each other, thereby preventing the sealing flap 12 from turning inward. In other embodiments, the lower end faces of each first rib structure 123 may be at other angles, which are not specifically limited in this embodiment.

[0054] In this embodiment, each sealing flap 12 has at least one first rib structure 123. When there is one first rib structure 123, the first rib structure 123 is located in the middle of the bottom surface 122. The middle of the bottom surface 122 refers to the first rib structure extending from the midpoint of the upper edge of the bottom surface 122 to the midpoint of the lower edge. When there are multiple first rib structures 123, multiple first rib structures 123 are arranged at intervals and at least one first rib structure 123 is located in the middle of the bottom surface 122. Multiple first rib structures 123 can further enhance the anti-inversion ability of the sealing flap 12. When the sealing flap 12 tends to flip upward, the middle of the lower edge of the sealing flap 12 is deformed first. A first convex rib structure 123 is provided in the middle of the bottom surface 122. The first convex rib structure 123 can prevent the middle part of the lower edge of the sealing flap 12 from deforming by abutting against each other, thereby preventing the sealing flap 12 from turning inward. The first convex rib structure 123 located in the middle of the bottom surface 122 can prevent each sealing flap 12 from partially turning inward (deformation only occurs in the middle part of the lower edge of the sealing flap 12).

[0055] In the prior art, the thickness of the sealing flap 12 is different at different locations, and the thickness of the lower end of the sealing flap 12 is relatively thick to ensure the sealing performance when the lower end of the sealing flap 12 is fitted. However, when the surgical instrument is inserted, due to the slow deformation speed of the lower end of the sealing flap 12, it is often unable to open in time, causing obstruction to the inserted surgical instrument. In order to solve the above problem, in the present embodiment, the thickness of the sealing flap 12 is the same at various locations. In other words, the sealing flap 12 is a uniformly thick structure, that is, the cross-section of the sealing flap 12 at any position from the upper end to the lower end has the same thickness, so that when the surgical instrument is inserted, the deformation speed and deformation amplitude of the sealing flap 12 are substantially the same at various locations, which effectively avoids the problem that when the surgical instrument is inserted, the deformation speed and deformation amplitude of the sealing flap 12 at various locations are different, resulting in the sealing flap 12 failing to open in time and thus holding the surgical instrument, thereby avoiding the problem of affecting the normal use of the surgical instrument.

[0056] For further information, see Figure 3 to Figure 4The sealing cylinder 11 is provided with a plurality of limiting protrusions 111, each of which radially protrudes from the inner side of the sealing cylinder 11. Each limiting protrusion 111 is located on the upper side of the sealing flap 12 to prevent the sealing flap 12 from flipping toward the upper end opening. Specifically, the upper side of the sealing flap 12 refers to the side of the sealing flap 12 close to the upper end opening of the sealing cylinder 11.

[0057] The limiting protrusion 111 can play the role of limiting and stopping the sealing flap 12, further improving the anti-inversion ability of the sealing flap 12. Specifically, when the puncture core rod, stapler or other surgical instruments are pulled out, the sealing flap 12 is folded inward due to the large force toward the upper opening. At this time, the lower end of the limiting protrusion 111 contacts the top surface 121 of the sealing flap 12 to limit and stop the sealing flap 12, so that the sealing flap 12 cannot continue to invert and then returns to the initial state under the action of its own elastic force.

[0058] In a preferred embodiment, the two end points of the lower edge of the sealing flap 12 are connected to the inner side of the sealing cylinder 11, and the limiting protrusion 111 is located above the lower edge of the sealing flap 12. When the sealing flap 12 has a tendency to turn inward, the lower edge of the sealing flap 12 is stopped by the limiting protrusion 111, thereby preventing the sealing flap 12 from turning inward.

[0059] Furthermore, the limiting protrusion 111 is arranged on the upper side of two adjacent sealing flaps 12, which can simultaneously prevent the lower edges of the two adjacent sealing flaps 12 from turning inward. The lower ends of the two adjacent sealing flaps 12 are attached to each other to form a joint, and the limiting protrusion 111 is arranged on the upper side of the joint, and the shape of the lower end surface of each limiting protrusion 111 is adapted to the shape of the joint of the two adjacent sealing flaps 12. When the above-mentioned two sealing flaps 12 have a tendency to turn inward, the limiting protrusion 111 simultaneously blocks the lower edges of the two sealing flaps 12, thereby preventing the lower edges of the sealing flaps 12 from turning upward and causing inward. For example, if the joint of the two adjacent sealing flaps 12 is arranged in a V-shape, then the lower end surface of the limiting protrusion 111 is the corresponding V-shaped tip surface, and the limiting protrusion 111 is attached to the top surface 121 of the two sealing flaps 12 and presses against the lower edges of the two sealing flaps 12. Through the above arrangement, the lower end surface of the limiting protrusion 111 is in full contact with the sealing flap 12, thereby achieving a better blocking effect.

[0060] In this embodiment, the limiting protrusion 111 extends along the axial direction of the sealing cylinder 11, that is, the limiting protrusion 111 is a vertically arranged strip. Of course, the limiting protrusion 111 can also extend in a direction perpendicular to the axial direction of the sealing cylinder 11, that is, the limiting protrusion 111 is a horizontally arranged strip; or the limiting protrusion 111 extends along the circumferential direction of the sealing cylinder 11, that is, the limiting protrusion 111 is a horizontally arranged arc, which can be selected according to actual needs.

[0061] See also Figure 4, a second convex rib structure 124 is provided on the top surface 121 of the sealing flap 12, and the second convex rib structure 124 extends from the upper end of the top surface 121 to the lower end of the top surface 121. The second convex rib structure 124 includes a first convex rib 1241 and at least one second convex rib 1242, the first convex rib 1241 and the second convex rib 1242 are arranged at intervals, and the first convex rib 1241 is located in the middle position of the sealing flap 12. The middle position of the top surface means that the first convex rib 1241 is provided on the top surface 121 and extends from the midpoint of the upper edge of the sealing flap 12 to the midpoint of the lower edge.

[0062] Specifically, the first convex rib 1241 includes a first section, a second section, and a third section connected in sequence, and the thickness of the second section is greater than the thickness of the first section and the third section. That is, the second section is the raised portion of the first convex rib 1241. When the axis of the surgical instrument is inserted along the axis of the sealing sleeve, the surgical instrument acts on the raised portion to open the opening at the lower edge of the sealing flap 12 in advance, so as to prevent the sealing flap 12 from holding the surgical instrument and affecting the normal use of the surgical instrument, and at the same time prevent the tip of the surgical instrument from causing damage to the sealing flap 12. When the axis of the surgical instrument is offset from the axis of the sealing sleeve, the surgical instrument acts on the first convex rib 1241 and at least one second convex rib 1242 to open the opening at the lower edge of the sealing flap 12 in advance.

[0063] In this embodiment, since the surgical instrument is usually inserted into the sealing sleeve from the middle position, even if the surgical instrument is inserted eccentrically, since the surgical instrument has a certain outer diameter, it will first contact the first convex rib 1241 at the middle position. Therefore, in general, it is sufficient to provide a convex portion on the first convex rib 1241 at the middle position, and the second convex rib 1242 can be a smooth structure. Of course, the second convex rib 1242 can also be the same structure as the first convex rib 1241, so as to achieve a better effect of opening the opening in advance.

[0064] See also Figure 5In another embodiment, the sealing sleeve includes an extension portion 125. The lower edge of each sealing flap 12 is connected to the extension portion 125, and cooperates with each other through the extension portion 125. The mutual cooperation in this embodiment refers to that each sealing flap 12 is connected through the extension portion 125. The extension portion 125 is provided with a bottom opening, and the bottom opening is connected to the lower end opening of the sealing cylinder 11. When the bottom opening is closed, the lower end opening is closed, and when the bottom opening is opened, the lower end opening is opened. In response to the insertion of the surgical instrument, each sealing flap 12 is deformed to deform the extension portion 125, open the bottom opening, and then open the lower end opening. The first rib structure 123 extends from the upper edge of the bottom surface to the lower edge and is connected to the extension portion. Specifically, the extension portion 125 is formed at the connection of the lower edge of each sealing flap 12, and is formed by folding the lower end edge of each sealing flap 12 outward. When the surgical instrument drives the sealing flap 12 to flip upward, the first rib structures 123 abut against each other through the extensions 125, that is, the first rib structures 123 do not abut directly against each other, but generate mutual force, thereby preventing the sealing flap 12 from turning inward. The extensions 125 are connected to the lower edges of the sealing flaps 12, thereby improving the anti-deformation ability of the lower edges of the sealing flaps 12, and further improving the anti-turning ability of the sealing flaps 12.

[0065] In this embodiment, there are two sealing flaps 12, and the two sealing flaps 12 are symmetrically arranged. Further, the two sealing flaps 12 are arranged at an angle, preferably, the two sealing flaps 12 form an obtuse angle with each other, and the lower edge ends of the two sealing flaps 12 face away from the mounting flange 20 and are close to each other. Correspondingly, there are also two limiting protrusions 111, and the two limiting protrusions 111 are relatively arranged at both ends of the connection between the two sealing flaps 12. Correspondingly, the extension portion 125 is a straight strip groove. In another embodiment, there are three sealing flaps 12, and the lower edges of the three sealing flaps 12 are arranged in a Y shape and fit each other; in another embodiment, there are four sealing flaps 12, and the lower edges of the four sealing flaps 12 are arranged in a cross shape and fit each other; in other embodiments, the sealing flaps 12 can be greater than four, no matter how many sealing flaps 12 there are, each sealing flap 12 can seal the lower end opening of the sealing sleeve, preferably, each sealing flap 12 has the same shape, and when the surgical instrument is inserted, each sealing flap 12 produces a similar or identical deformation, and the lower end opening is smoothly opened.

[0066] See also Figure 6 The present invention also provides a puncture device, including a puncture core rod 40, a sleeve assembly 50 and the above-mentioned sealing sleeve 30, wherein the puncture core rod 40 is removably arranged in the sleeve assembly 50. Specifically, the puncture core rod 40 can be inserted into the sleeve assembly 50. The sleeve assembly 50 forms a passage between the abdominal cavity of the human body and the outside, and the puncture core rod 40 can guide the sleeve assembly 50 to be inserted into the abdominal cavity of the human body from the incision of the abdomen of the human body. A sealing assembly is arranged in the sleeve assembly 50, and the sealing assembly includes the above-mentioned sealing sleeve 30.

[0067] Embodiment 2

[0068] See also Figures 1 to 4 The sealing sleeve includes a sealing body 10 and a mounting flange 20. The sealing body 10 includes a sealing cylinder 11 and a plurality of sealing petals 12. The mounting flange 20 is located at the upper edge of the sealing cylinder 11. The sealing cylinder 11 has an upper opening and a lower opening. The upper edge of each sealing petal 12 is connected to the edge of the lower opening of the sealing cylinder 11. The lower edges of the plurality of sealing petals 12 cooperate with each other. The mutual cooperation in this embodiment refers to the mutual fit of the lower edges of each sealing petal 12 so that the lower opening of the sealing cylinder 11 can be selectively opened or closed. The sealing cylinder 11 is provided with a plurality of limiting protrusions 111, and each limiting protrusion 111 radially protrudes from the inner side surface of the sealing cylinder 11. Each limiting protrusion 111 is located on the upper side of the sealing petal 12 to limit and stop the sealing petal 12.

[0069] The setting of the limiting protrusion 111 can play a role of limiting and stopping the inward turning of the sealing flap 12. Specifically, when the puncture core rod, stapler or other surgical instruments are pulled out, the sealing flap 12 is folded inward due to a large force. At this time, the lower end of the limiting protrusion 111 contacts the top surface 121 of the sealing flap 12 to limit and stop the sealing flap 12, so that the sealing flap 12 cannot continue to turn inward and then returns to the initial state under the action of its own elastic force.

[0070] In a preferred embodiment, the two end points of the lower edge of the sealing flap 12 are connected to the inner side of the sealing cylinder 11, and the limiting protrusion 111 is located above the lower edge of the sealing flap 12. When the sealing flap 12 has a tendency to turn inward, the lower edge of the sealing flap 12 is stopped by the limiting protrusion 111, thereby preventing the sealing flap 12 from turning inward.

[0071] Furthermore, the limiting protrusion 111 is arranged on the upper side of two adjacent sealing flaps 12, and can simultaneously block the lower edges of the two adjacent sealing flaps 12 from turning inward. The lower ends of the two adjacent sealing flaps 12 are attached to each other to form an attached part, and the limiting protrusion 111 is arranged on the upper side of the attached part, and the shape of the lower end surface of each limiting protrusion 111 is adapted to the shape of the attached part of the two adjacent sealing flaps 12. When the above-mentioned two sealing flaps 12 have an inverted tendency, the limiting protrusion 111 simultaneously blocks the lower edges of the two sealing flaps 12, thereby preventing the lower edges of the sealing flaps 12 from turning upward and causing inverted. For example, if the attached part of the two adjacent sealing flaps 12 is arranged in a V-shape, then the lower end surface of the limiting protrusion 111 is the corresponding V-shaped tip surface, and the limiting protrusion 111 is attached to the top surface 121 of the two sealing flaps 12 and presses against the lower edges of the two sealing flaps 12. Through the above arrangement, the lower end surface of the limiting protrusion 111 is in full contact with the sealing flap 12, thereby achieving a better blocking effect.

[0072] In this embodiment, the limiting protrusion 111 extends along the axial direction of the sealing cylinder 11, that is, the limiting protrusion 111 is a vertically arranged strip. Of course, the limiting protrusion 111 can also extend in a direction perpendicular to the axial direction of the sealing cylinder 11, that is, the limiting protrusion 111 is a horizontally arranged strip; or the limiting protrusion 111 extends along the circumferential direction of the sealing cylinder 11, that is, the limiting protrusion 111 is a horizontally arranged arc, which can be selected according to actual needs.

[0073] See also Figure 1 to Figure 2 Each sealing flap 12 has a top surface 121 and a bottom surface 122 facing each other, the top surface 121 is arranged toward the upper end opening of the sealing cylinder, and the bottom surface 122 is provided with a first convex rib structure 123, the first convex rib structure 123 extends from the upper edge of the bottom surface 122 to the lower edge of the bottom surface 122, and the lower ends of each first convex rib structure 123 are arranged correspondingly. The corresponding arrangement of the lower ends of each first convex rib structure 123 means that the lower ends of the first convex rib structures 123 of each sealing flap 12 converge at the lower edge of the bottom surface 122 of the sealing flap 12, and when the sealing flap 12 has a tendency to turn inward, the lower edges of each sealing flap 12 turn upward, and the first convex rib structures 123 corresponding to each other abut against each other. Through the above-mentioned arrangement, the closing force of the sealing flap 12 can be increased, so that the sealing flap 12 can be quickly closed to prevent air leakage when the surgical instrument is pulled out. When the surgical instrument is pulled out and drives the sealing flap 12 to have a tendency to flip upward, the lower ends of the first rib structures 123 will abut against each other. The mutual abutment means that the first rib structures 123 directly abut to generate an interaction force, or the first rib structures 123 do not directly abut but generate an interaction force, thereby preventing the sealing flap 12 from turning inward.

[0074] In this embodiment, each sealing flap 12 has at least one first rib structure 123. When there is one first rib structure 123, the first rib structure 123 is located in the middle of the bottom surface 122. The middle of the bottom surface 122 refers to the first rib structure 123 extending from the midpoint of the upper edge of the bottom surface 122 to the midpoint of the lower edge. When there are multiple first rib structures 123, multiple first rib structures 123 are arranged at intervals and at least one first rib structure 123 is located in the middle of the bottom surface 122. When the surgical instrument is inserted into the sealing sleeve, it is usually inserted from the middle position. Through the above arrangement, it can be ensured that at least the lower end faces of the first rib structure 123 located in the middle position can achieve mutual abutment, thereby ensuring the effect of preventing the sealing flap 12 from turning inward.

[0075] In the prior art, the thickness of the sealing flap 12 is different at different locations, and the thickness of the lower end of the sealing flap 12 is relatively thick to ensure the sealing performance when the lower end of the sealing flap 12 is fitted. However, when the surgical instrument is inserted, due to the slow deformation speed of the lower end of the sealing flap 12, it is often unable to open in time, causing obstruction to the inserted surgical instrument. In order to solve the above problem, in the present embodiment, the thickness of the sealing flap 12 is the same at various locations. In other words, the sealing flap 12 is a uniformly thick structure, that is, the cross-section of the sealing flap 12 at any position from the upper end to the lower end has the same thickness, so that when the surgical instrument is inserted, the deformation speed and deformation amplitude of the sealing flap 12 are substantially the same at various locations, which effectively avoids the problem that when the surgical instrument is inserted, the deformation speed and deformation amplitude of the sealing flap 12 at various locations are different, resulting in the sealing flap 12 failing to open in time and thus holding the surgical instrument, thereby avoiding the problem of affecting the normal use of the surgical instrument.

[0076] See also Figure 4 The top surface 121 of the sealing flap 12 is provided with a second convex rib structure 124 protruding from the top surface 121 in a direction away from the bottom surface 122, and the second convex rib structure 124 extends from the upper edge of the top surface 121 to the lower edge of the top surface 121. The second convex rib structure 124 includes a first convex rib 1241 and at least one second convex rib 1242, the first convex rib 1241 and the second convex rib 1242 are arranged at intervals and the first convex rib 1241 is located at the middle position of the top surface 121, and the middle position of the top surface 121 means that the first convex rib 1241 is arranged on the top surface 121 and extends from the midpoint of the upper edge of the sealing flap 12 to the midpoint of the lower edge.

[0077] Specifically, the first convex rib 1241 includes a first section, a second section, and a third section connected in sequence, and the thickness of the second section is greater than the thickness of the first section and the third section. That is, the second section is the raised portion of the first convex rib 1241. When the axis of the surgical instrument is inserted along the axis of the sealing sleeve, the surgical instrument acts on the raised portion to open the opening at the lower edge of the sealing flap 12 in advance, so as to prevent the sealing flap 12 from holding the surgical instrument and affecting the normal use of the surgical instrument, and at the same time prevent the tip of the surgical instrument from causing damage to the sealing flap 12. When the axis of the surgical instrument is offset from the axis of the sealing sleeve, the surgical instrument acts on the first convex rib 1241 and at least one second convex rib 1242 to open the opening at the lower edge of the sealing flap 12 in advance.

[0078] In this embodiment, since the surgical instrument is usually inserted into the sealing sleeve from the middle position, even if the surgical instrument is inserted eccentrically, since the surgical instrument has a certain outer diameter, it will first contact the first convex rib 1241 at the middle position. Therefore, in general, it is sufficient to provide a convex portion on the first convex rib 1241 at the middle position, and the second convex rib 1242 can be a smooth structure. Of course, the second convex rib 1242 can also be the same structure as the first convex rib 1241, so as to achieve a better effect of opening the opening in advance.

[0079] In summary, the sealing sleeve of the present invention is provided with a first rib structure 123 on the bottom surface 122 of the sealing flap 12. The first rib structure 123 extends from the upper edge of the bottom surface 122 to the lower edge of the bottom surface 122 and the lower ends of the first rib structures 123 are correspondingly provided. In this way, the closing force of the sealing flap 12 can be increased, so that the sealing flap 12 can be quickly closed to prevent air leakage when the surgical instrument is pulled out. When the surgical instrument drives the sealing flap 12 to flip upward, the lower ends of the first rib structures 123 will resist each other, thereby preventing the sealing flap 12 from turning inward.

[0080] See also Figure 6 The present invention also provides a puncture device, including a puncture core rod 40, a sleeve assembly 50 and the above-mentioned sealing sleeve 30, wherein the puncture core rod 40 is removably arranged in the sleeve assembly 50. Specifically, the puncture core rod 40 can be inserted into the sleeve assembly 50. The sleeve assembly 50 forms a passage between the abdominal cavity of the human body and the outside, and the puncture core rod 40 can guide the sleeve assembly 50 to be inserted into the abdominal cavity of the human body from the incision of the abdomen of the human body. A sealing assembly is arranged in the sleeve assembly 50, and the sealing assembly includes the above-mentioned sealing sleeve 30.

[0081] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0082] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealing sleeve, characterized in that: The invention comprises a sealing body and a mounting flange, wherein the sealing body comprises a sealing cylinder and a plurality of sealing petals, wherein the mounting flange is connected to the upper edge of the sealing cylinder, wherein the sealing cylinder has an upper opening and a lower opening, wherein when the surgical instrument is inserted inward, the surgical instrument passes through the upper opening and the lower opening in sequence, wherein the upper end of each sealing petal is connected to the edge of the lower opening, and the lower end of each sealing petal cooperates with each other to close the lower opening, and in response to the insertion of the surgical instrument, each sealing petal is deformed to open the lower opening; Each of the sealing flaps has a top surface and a bottom surface facing each other, and the bottom surface is provided with a first rib structure, which extends from the upper edge of the bottom surface to the lower edge of the bottom surface, and the lower ends of each of the first rib structures are correspondingly arranged. When the surgical instrument is pulled outward, each of the first rib structures abuts against each other to prevent the lower end of each of the sealing flaps from flipping toward the upper end opening.

2. The sealing sleeve according to claim 1, characterized in that: Each of the sealing petals has at least one of the first rib structures, When there is one first rib structure, the first rib structure is located in the middle of the sealing flap; When there are a plurality of the first rib structures, the plurality of the first rib structures are arranged at intervals and at least one of the first rib structures is located in the middle of the bottom surface.

3. The sealing sleeve according to claim 1, characterized in that: The thickness of the sealing flap is the same at all locations.

4. The sealing sleeve according to claim 1, characterized in that: The sealing cylinder is provided with a plurality of limiting protrusions, each of which radially protrudes from the inner side surface of the sealing cylinder, and each of which is located on the upper side of the sealing flap to prevent the lower end of the sealing flap from flipping toward the upper end opening.

5. The sealing sleeve according to claim 4, characterized in that: The lower ends of two adjacent sealing flaps are attached to each other to form an attached part, and the limiting protrusion is located on the upper side of the attached part to prevent the lower ends of the two adjacent sealing flaps from flipping toward the upper end opening.

6. The sealing sleeve according to claim 4, characterized in that: The limiting protrusion extends along the axial direction of the sealing cylinder; or The limiting protrusion extends in a direction perpendicular to the axial direction of the sealing cylinder; or The limiting protrusion extends along the circumference of the sealing cylinder.

7. The sealing sleeve according to claim 1, characterized in that: The top surface is provided with a second convex rib structure, and the second convex rib structure extends from the upper edge of the top surface to the lower edge of the top surface.

8. The sealing sleeve according to claim 7, characterized in that: The second convex rib structure includes a first convex rib and at least one second convex rib, the first convex rib and the second convex rib are arranged at intervals, and the first convex rib is located in the middle of the top surface.

9. The sealing sleeve according to claim 1, characterized in that: The sealing sleeve includes an extension portion, and the lower end of each sealing flap is connected to the extension portion and cooperates with each other through the extension portion. The extension portion is provided with a bottom opening, and the bottom opening is communicated with the lower end opening. When the bottom opening is closed, the lower end opening is sealed, and when the bottom opening is opened, the lower end opening is opened. In response to the insertion of the surgical instrument, each sealing flap is deformed to open the bottom opening, and then open the lower end opening. The first rib structure extends from the upper end of the bottom surface to the extension portion.

10. The sealing sleeve according to any one of claims 1 to 9, characterized in that: There are two sealing flaps, and the two sealing flaps are symmetrically arranged; or There are three sealing petals, and the lower edges of the three sealing petals are arranged in a Y shape; or There are four sealing petals, and the lower end edges of the four sealing petals are arranged in a cross shape; or The number of the sealing petals is greater than four.

11. A sealing sleeve, characterized in that: The invention comprises a sealing body and a mounting flange, wherein the sealing body comprises a sealing cylinder and a plurality of sealing petals, wherein the mounting flange is connected to the upper edge of the sealing cylinder, wherein the sealing cylinder has an upper opening and a lower opening, and when the surgical instrument is inserted inward, the surgical instrument passes through the upper opening and the lower opening in sequence, and the upper end of each sealing petal is connected to the edge of the lower opening of the sealing cylinder, and the lower end of each sealing petal cooperates with each other to close the lower opening, and in response to the insertion of the surgical instrument, each sealing petal is deformed to open the lower opening; The sealing cylinder is provided with a plurality of limiting protrusions, each of which radially protrudes from the inner side surface of the sealing cylinder, and each of which is located on the upper side of the sealing flap to prevent the lower end of the sealing flap from flipping toward the upper end opening.

12. The sealing sleeve according to claim 11, characterized in that: The lower ends of two adjacent sealing flaps are attached to each other to form an attached part, and the limiting protrusion is located on the upper side of the attached part to prevent the lower ends of the two adjacent sealing flaps from flipping toward the upper end opening.

13. The sealing sleeve according to claim 11, characterized in that: Each of the sealing petals has a top surface and a bottom surface facing each other, and the bottom surface is provided with a first convex rib structure, which extends from the upper edge of the bottom surface to the lower edge of the bottom surface.

14. The sealing sleeve according to claim 13, characterized in that: Each of the sealing petals has at least one of the first rib structures, When there is one first rib structure, the first rib structure is located in the middle of the sealing flap; When there are a plurality of the first rib structures, the plurality of the first rib structures are arranged at intervals and at least one of the first rib structures is located in the middle of the bottom surface.

15. The sealing sleeve according to claim 11, characterized in that: The thickness of the sealing flap is the same at all locations.

16. The sealing sleeve according to claim 11, characterized in that: The top surface is provided with a second convex rib structure, and the second convex rib structure extends from the upper edge of the top surface to the lower edge of the top surface.

17. The sealing sleeve according to claim 16, characterized in that: The second convex rib structure includes a first convex rib and at least one second convex rib, the first convex rib and the second convex rib are arranged at intervals, and the first convex rib is located in the middle of the top surface.

18. A puncture device, comprising a sleeve assembly and a puncture core rod removably arranged in the sleeve assembly, characterized in that: The bushing assembly comprises a sealing sleeve according to any one of claims 1 to 10 or any one of claims 11 to 17.

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