Electric resection loop and prostate resection mirror thereof

Abstract

The utility model relates to an electric resection loop and a prostate resection mirror thereof. The electric resection loop is of an inwards-sunken spade-shaped structure and comprises a first electric resection part and a second electric resection part, the first electric resection part is provided with a first arc-shaped part, the curvature of the middle position of the first arc-shaped part is larger than or equal to the curvature of the two sides of the first arc-shaped part, one side of the first electric resection part is connected with one side of the second electric resection part, and the other side of the first electric resection part is connected with the second electric resection part. And a through hole is formed in the second electric cutting part. The electric resection loop is arranged to be of the plate-shaped structure which is concave inwards, the first arc-shaped part is arranged on the first electric resection part, and therefore the electric resection loop can be inserted into a prostate surgery envelop plane more easily and is not prone to deformation, in addition, the electric resection loop is designed to be of the spade-shaped structure, and compared with an annular structure, the electric resection loop is more convenient to use. The spade-shaped structure has higher strength, so that when the electric resection loop is used for pushing prostate tissue, the electric resection loop is not prone to deformation, the electric resection loop can be protected in the operation process, and smooth operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of prostatectomy endoscopy technology, and in particular to an electrocautery loop that is more stable in its enucleation work and its prostatectomy endoscope. Background Technology

[0002] In related techniques, transurethral resection of the prostate (TURP) typically utilizes a prostate resectoscope to remove prostate tumors or stones within the prostate. During the procedure, the dissection of the prostate is mainly achieved using the tip of the inner sheath of the TURP scope and the resection loop. However, the resection loop is generally a ring-shaped structure made of metal wire, as shown in the attached diagram. Figure 1 As shown, this traditional electrosurgical loop is prone to deformation or even breakage when pushing prostate tissue, which can affect the surgery and consequently impact the patient's health. Utility Model Content

[0003] Therefore, it is necessary to provide an electroresection loop and its prostatectomy endoscope to address the problem that the electroresection loop is prone to deformation or even breakage when pushing prostate tissue.

[0004] This utility model proposes an electrocautery loop, which is a shovel-shaped structure bent to one side, and has a through hole; the two opposite sides of the electrocautery loop are hemostatic surfaces, which are used to increase the contact area between the electrocautery loop and the prostate tissue and enhance the structural strength of the electrocautery loop; the hemostatic surfaces account for 30% to 70% of the projected area of ​​the electrocautery loop;

[0005] The electrical cutting loop includes a first electrical cutting portion and a second electrical cutting portion, the first electrical cutting portion is connected to the second electrical cutting portion, the first electrical cutting portion has a first arc-shaped portion on the side away from the second electrical cutting portion, and the curvature of the middle position of the first arc-shaped portion is greater than or equal to the curvature of the two sides of the first arc-shaped portion.

[0006] As a further improvement of this utility model, the second electric cutting part has a second arc-shaped part, and the curvature of the first arc-shaped part is greater than the curvature of the second arc-shaped part.

[0007] As a further improvement of this utility model, the second electric cutting part has a second arc-shaped part, and the curvature of the two sides of the first arc-shaped part is equal to the curvature of the second arc-shaped part.

[0008] As a further improvement of this utility model, a plurality of first protrusions are provided at intervals on the outer peripheral wall of the electric cutting loop.

[0009] As a further improvement of this utility model, in the thickness direction of the electric cutting loop, the first protrusion is the same length as the electric cutting loop.

[0010] As a further improvement of this utility model, the plurality of first protrusions are arranged at equal intervals.

[0011] As a further improvement of this utility model, the cross-sectional shape of the first protrusion in the protruding direction is an arc-shaped structure.

[0012] As a further improvement of this utility model, the cross-sectional shape of the first protrusion is a polygonal structure, and a rounded corner is provided between two adjacent sides of the first protrusion.

[0013] This utility model also proposes a prostatectomy endoscope, comprising: an electrocautery loop, an outer sheath, and an inner sheath as described above, wherein a plurality of second protrusions are provided on the oblique surface of the inner sheath.

[0014] As a further improvement of this utility model, the plurality of second protrusions are spaced apart; and / or the cross-sectional shape of the second protrusions in the protrusion direction is an arc-shaped structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model designs the electroresection loop as an inwardly concave plate-like structure, and provides a first arc-shaped portion in the first electroresection section. This makes it easier for the electroresection loop to be inserted into the surgical capsule plane of the prostate, and it is less prone to deformation, thus allowing the electroresection loop to work better. In addition, the electroresection loop is designed as a shovel-shaped structure. Compared with the ring structure, the shovel-shaped structure has higher strength, so it is less prone to deformation when using the electroresection loop to push the prostate tissue. This can prevent the electroresection loop from deforming or even breaking during the operation, which is conducive to the smooth progress of the operation. At the same time, the shovel-shaped structure can increase the contact area between the electroresection loop and the prostate tissue, which helps to improve the hemostasis effect.

[0017] 2. Multiple first protrusions are spaced apart on the outer wall of the electroresection loop. These multiple first protrusions can increase the friction between the electroresection loop and the prostate, making it less likely to fall off when the electroresection loop is used to push and peel the prostate, thus allowing the electroresection loop to work more effectively.

[0018] 3. By adding a second protrusion to the end of the inner sheath, this utility model can increase the friction between the inner sheath and the prostate endometrium. In situations where greater pushing force is required, the inner sheath can be used instead of the electrocautery loop to push and peel the prostate tissue, thereby allowing the prostate tissue to be pushed and peeled at will without damaging the electrocautery loop. Furthermore, the second protrusion prevents the inner sheath from easily slipping during pushing and peeling. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an electrically operated loop in the prior art;

[0020] Figure 2 This is a schematic diagram of the structure of the electro-cutting loop according to an embodiment of the present invention;

[0021] Figure 3 This is a partial structural diagram of the prostatectomy endoscope according to an embodiment of the present invention.

[0022] In the figure: 1. Electrocutting loop; 11. First electrocutting part; 111. First arc-shaped part; 12. Second electrocutting part; 121. Second arc-shaped part; 122. Through hole; 2. First protrusion; 3. Outer sheath; 4. Inner sheath; 41. Second protrusion. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that when a component is said to be "installed on" another component, it can be directly on the other component or it may be in a component that is centered on it. When a component is said to be "set on" another component, it can be directly set on the other component or it may also be in a component that is centered on it. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be in a component that is centered on it.

[0025] This utility model embodiment proposes an electrocautery loop. It should be noted that the electrocautery loop 1 is a component of the prostatectomy endoscope. When cutting tissue, it mainly uses the energy generated by the laser or plasma emitted by the electrocautery loop 1 to cut the tissue, and the electrocautery loop 1 can also be used to stop bleeding during the operation.

[0026] Specifically, such as Figure 2 As shown, the electroresection loop 1 is an inwardly concave shovel-shaped structure. Specifically, the electroresection loop 1 is designed to bend to one side and be concave inward, forming a shovel shape. A through-hole 122 is provided on the electroresection loop 1 to generate the necessary plasma effect for tissue resection and hemostasis. This design makes the electroresection loop 1 easier to insert into the prostate surgical capsule plane, less prone to deformation and damage, thus allowing it to function more effectively. Furthermore, the shovel-shaped structure of the electroresection loop 1, compared to a ring structure, offers higher strength, reducing the likelihood of deformation when pushing prostate tissue. This protects the electroresection loop 1 during surgery and facilitates a smoother surgical procedure.

[0027] It is particularly important to note that, unlike traditional electroresection loops, the upper and lower sides of the electroresection loop 1 in this embodiment have hemostatic surfaces, which are clearly defined and visually apparent, unlike the linear structure of traditional electroresection loops. The area of ​​this hemostatic surface accounts for 30% to 70% of the total projected area of ​​the electroresection loop 1; that is, the size of the hemostatic surface is determined by the size of the through-hole 122. In practical applications, the larger the through-hole 122, the higher the plasma intensity generated by the electroresection loop 1, and the better the resection effect. A larger hemostatic surface results in higher structural strength of the electroresection loop 1, making it less prone to deformation or breakage. Therefore, the size of the hemostatic surface can be chosen by comprehensively considering the actual situation, combining the advantages of good resection effect and high structural strength. Furthermore, the hemostatic surface on the electroresection loop 1 can also increase the contact area between the electroresection loop 1 and the prostate tissue, which is beneficial for improving the hemostasis effect. These effects are all unattainable by traditional electroresection loops.

[0028] Furthermore, the electrocautery loop 1 includes a first electrocautery section 11, which has a first arcuate portion 111, and the curvature of the middle position of the first arcuate portion 111 is greater than or equal to the curvature of the two sides of the first arcuate portion 111. The first electrocautery section 11 is the anterior portion of the electrocautery loop 1 and is mainly used for pushing and dissecting the prostate and performing cutting and hemostasis operations. In addition, the first arcuate portion 111 also helps reduce resistance. During the pushing and dissecting of the prostate, the first arcuate portion 111 first contacts the prostatic lining. Because the middle position of the first arcuate portion 111 is relatively small, the resistance to insertion of the first electrocautery section 11 into the prostate is reduced. Moreover, the first arcuate portion 111 is an arcuate structure, allowing for a gradual transition through the curved surface during insertion into the prostate, thus facilitating the insertion of the electrocautery loop 1 into the interior of the prostate.

[0029] Furthermore, the curvature of the middle position of the first arc-shaped portion 111 is greater than or equal to the curvature of the two sides of the first arc-shaped portion 111. Understandably, when the curvature of the middle position of the first arc-shaped portion 111 is greater than or equal to the curvature of the two sides of the first arc-shaped portion 111, the first arc-shaped portion 111 is a circular arc structure, which facilitates better insertion of the first electrocautery unit 11 into the prostate. It should be noted that while a greater curvature in the middle position of the first arc-shaped portion 111 than the two sides is more conducive to insertion of the first electrocautery unit 11 into the prostate, the middle of the first arc-shaped portion 111 should not be too sharp, as this could damage the urethral mucosa.

[0030] Furthermore, the electrocautery loop 1 also includes a second electrocautery section 12. One side of the first electrocautery section 11 is connected to one side of the second electrocautery section 12, and the first arc-shaped section 111 is located on the side of the first electrocautery section 11 away from the second electrocautery section 12. The second electrocautery section 12 is the rear part of the electrocautery loop 1 and is mainly used for pushing and dissecting the prostate and performing cutting and hemostasis operations. The connection between one side of the first electrocautery section 11 and one side of the second electrocautery section 12 allows the first electrocautery section 11 and the second electrocautery section 12 to form a whole, that is, to form a complete electrocautery loop 1. This makes the structure of the electrocautery loop 1 more complete and also improves the stability and structural strength of the electrocautery loop 1.

[0031] The second electrical cutting section 12 has a second arc-shaped section 121. It should be noted that in this embodiment, there are two second arc-shaped sections 121, which are located on both sides of the second electrical cutting section 12, and the two second arc-shaped sections 121 are respectively connected to both sides of the first arc-shaped section 111.

[0032] The curvature of the first arc-shaped portion 111 is greater than that of the second arc-shaped portion 121. The second arc-shaped portion 121 mainly serves as a transition and reduces resistance. During the process of dissecting the prostate, the first arc-shaped portion 111 on the first electrocautery section 11 first contacts the prostate endometrium, and then the second arc-shaped portion 121 immediately transitions to the prostate endometrium, which helps to protect the prostate.

[0033] Furthermore, the curvature of the first arc-shaped portion 111 is greater than that of the second arc-shaped portion 121. In other words, the degree of curvature of the first arc-shaped portion 111 is greater than that of the second arc-shaped portion 121, meaning that the size of the first electrocautery portion 11 near the first arc-shaped portion 111 is smaller than the width of the second electrocautery portion 12, making it easier to insert into the prostate.

[0034] As an optional embodiment, the second electric cutting section 12 has a second arc-shaped section 121, and the curvature of the first arc-shaped section 111 is equal to the curvature of the second arc-shaped section 121. Understandably, when the curvature at the middle position of the first arc-shaped section 111 is equal to the curvature at both sides of the first arc-shaped section 111, the first arc-shaped section 111 and the second arc-shaped section 121 are concentric circles, resulting in a simpler structure and facilitating design and manufacturing. When the curvature at the middle position of the first arc-shaped section 111 is not equal to the curvature at both sides of the first arc-shaped section 111, the two sides of the first arc-shaped section 111 can be on the same concentric circle as the second arc-shaped section 121, which is also beneficial for design and manufacturing.

[0035] Furthermore, the outer peripheral wall of the electroresection loop 1 is provided with multiple first protrusions 2 at intervals. That is, multiple first protrusions 2 are provided on the outer wall of the first arc-shaped portion 111 and the second arc-shaped portion 121. The first protrusions 2 mainly serve to increase friction, which can increase the gripping force between the electroresection loop 1 and the corresponding tissue. For example, when using the electroresection loop 1 to remove a prostate tumor, the friction between the electroresection loop 1 and the prostate can be increased, so that slippage is less likely to occur when the electroresection loop 1 pushes and dissects the prostate, and the electroresection loop 1 can better remove the prostate tumor.

[0036] In addition, the multiple first protrusions 2 are evenly spaced. By spaced the multiple first protrusions 2, the distribution of the multiple first protrusions 2 can be made more uniform, thereby making the force on the electric cutting loop 1 more uniform and allowing the electric cutting loop 1 to work better.

[0037] Furthermore, the first protrusion 2 has an arc-shaped cross-section in the protruding direction. Setting the cross-sectional shape of the first protrusion 2 to an arc shape makes the surface of the protrusion 2 smoother, thereby increasing the friction between the electrocautery loop 1 and the prostate endometrium while reducing the damage to the prostate endometrium caused by the electrocautery loop 1, thus protecting the prostate.

[0038] As an optional embodiment, the first protrusion 2 has a polygonal cross-sectional shape in the protruding direction, and rounded corners are provided between adjacent sides of the first protrusion 2. That is, the first protrusion 2 can also be a polyhedral structure. When the first protrusion 2 is a polyhedral design, rounded corners are provided between adjacent faces. The rounded corner design can make the transition between the two faces smooth, thereby avoiding damage to the prostate endometrium caused by the sharp angle formed between the two faces.

[0039] As an optional embodiment, in the thickness direction of the electrocautery loop 1, the first protrusion 2 and the first electrocautery portion 11 have the same length. This makes the surface of the first protrusion 2 and the first electrocautery portion 11 flush, making the connection between the first protrusion 2 and the first electrocautery portion 11 smoother and more integrated, thereby reducing the formation of sharp points and further reducing damage to the prostate endometrium.

[0040] like Figure 3 As shown, this utility model also proposes a prostatectomy endoscope, including the aforementioned electroresection loop 1, outer sheath 3, and inner sheath 4. The inner sheath 4 has multiple second protrusions 41 on its oblique end face. These second protrusions 41 increase the friction between the inner sheath 4 and the prostate endometrium, preventing the inner sheath 4 from dislodging during operation and improving the stability of the prostatectomy endoscope. Through the combined use of the inner sheath 4 and the electroresection loop 1, the inner sheath 4 can be used to push and peel away stronger prostate tissue. When encountering weaker prostate tissue, the electroresection loop 1 can be used directly for pushing and peeling, thus avoiding deformation or breakage of the electroresection loop 1.

[0041] As an optional embodiment, the second protrusion 41 on the inner sheath 4 can be positioned within a range of 120° along the circumferential direction of the inner sheath 4.

[0042] As an optional embodiment, the plurality of second protrusions 41 are spaced apart. This makes the distribution of the plurality of second protrusions 41 more uniform, thereby making the force on the electric cutting loop 1 more uniform and allowing the electric cutting loop 1 to work better.

[0043] As an optional embodiment, the cross-sectional shape of the second protrusion 41 in the protrusion direction can be an arc-shaped structure.

[0044] The cross-sectional shape of the second protrusion 41 is set to an arc shape, which makes the surface of the second protrusion 41 smoother. This can increase the friction between the inner sheath 4 and the prostate endometrium while reducing the damage of the inner sheath 4 to the prostate endometrium and protecting the prostate.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electro-cutting loop, characterized in that: The electrocautery loop (1) is a shovel-shaped structure that bends to one side, and a through hole (122) is provided on the electrocautery loop (1); the two opposite sides of the electrocautery loop (1) are hemostatic surfaces, which are used to increase the contact area between the electrocautery loop (1) and the prostate tissue and to enhance the structural strength of the electrocautery loop (1); The hemostatic surface accounts for 30% to 70% of the projected area of ​​the electrocautery loop (1); The electrical cutting loop (1) includes: a first electrical cutting portion (11) and a second electrical cutting portion (12); the first electrical cutting portion (11) and the second electrical cutting portion (12) are integrally disposed; the first electrical cutting portion (11) has a first arc-shaped portion (111) on the side away from the second electrical cutting portion (12), and the curvature of the middle position of the first arc-shaped portion (111) is greater than or equal to the curvature of the two sides of the first arc-shaped portion (111).

2. The electro-cutting loop according to claim 1, characterized in that: The second electric cutting section (12) has a second arc-shaped section (121), and the curvature of the first arc-shaped section (111) is greater than the curvature of the second arc-shaped section (121).

3. The electro-cutting loop according to claim 1, characterized in that: The second electric cutting section (12) has a second arc-shaped section (121), and the curvature of the two sides of the first arc-shaped section (111) is equal to the curvature of the second arc-shaped section (121).

4. The electro-cutting loop according to claim 1, characterized in that: The outer peripheral wall of the electric cutting loop (1) is provided with a plurality of first protrusions (2) at intervals.

5. The electro-cutting loop according to claim 4, characterized in that: In the thickness direction of the electric cutting loop (1), the first protrusion (2) has the same length as the first electric cutting portion (11).

6. The electro-cutting loop according to claim 4, characterized in that: The first protrusions (2) are evenly spaced apart.

7. The electro-cutting loop according to claim 4, characterized in that: The first protrusion (2) has an arc-shaped cross-section in the protruding direction.

8. The electro-cutting loop according to claim 4, characterized in that: The first protrusion (2) has a polygonal cross-sectional shape in the protruding direction, and the first protrusion (2) has rounded corners between two adjacent sides.

9. A prostatectomy endoscope, characterized in that, include: An electro-cutting loop (1) according to any one of claims 1-8; Outer sheath (3); The inner sheath (4) has a plurality of second protrusions (41) on the oblique surface of the inner sheath (4).

10. A prostatectomy endoscope according to claim 9, characterized in that, The plurality of second protrusions (41) are spaced apart; and / or The cross-sectional shape of the second protrusion (41) is an arc-shaped structure.

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