Insertion part of endoscope
By designing an elliptical instrument port and insertion tube structure, the problem of discomfort caused by excessively large endoscope insertion tube diameter was solved. This allows for a reduction in the diameter of the endoscope's outer tube without affecting the perfusion fluid flow rate, thus reducing irritation and harm to the human body.
Patent Information
- Application Number
- CN202423129118.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing endoscopes, while maintaining the flow rate of irrigation fluid, have excessively large insertion tube diameters, which can cause significant irritation and damage to human cavities and organs during use.
An elliptical instrument port and insertion tube structure were designed. The insertion tube includes a first tube section and a second tube section. The cross-section of the second tube section is elliptical, which reduces the outer diameter of the insertion section without affecting the perfusion fluid flow rate.
Without reducing the flow rate of the perfusion fluid, the diameter of the endoscope tube was reduced, thus minimizing irritation and damage to human cavities and organs.
Smart Images
Figure CN223900768U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical equipment technical field, especially an endoscope's insertion part. BACKGROUND
[0002] An endoscope is a commonly used medical instrument, which is used to observe the cavity, organ or tissue inside the human body. In order to achieve a good and clear imaging effect, a higher irrigation flow is required. Under the same conditions, the larger the irrigation flow, the better the imaging effect. The size of the irrigation flow is related to the diameter of the insertion tube of the endoscope and the flow of the perfusion liquid. The larger the diameter of the insertion tube, the larger the irrigation flow. However, the insertion tube is usually arranged in the outer tube of the endoscope. If the diameter of the insertion tube is increased, the diameter of the outer tube of the endoscope will also be increased accordingly, which will cause the observed person to feel uncomfortable physiologically when the endoscope enters the human body. If the flow of the perfusion liquid is increased, the stimulation to the human tissue and organ will also be increased, which will also cause the observed person to feel uncomfortable. Therefore, it is necessary to balance the diameter of the outer tube of the endoscope and the flow of the perfusion liquid. SUMMARY
[0003] In view of the deficiencies of the prior art, the present application provides an insertion part of an endoscope, which reduces the diameter of the outer tube of the endoscope without changing the flow of the perfusion liquid.
[0004] The utility model discloses the following technical scheme:
[0005] An insertion part of an endoscope, the insertion part comprising a tip head, the head of the tip head being provided with a mounting hole for mounting an image acquisition sensor and an instrument hole for discharging perfusion liquid, the instrument hole being located below the mounting hole and being elliptical, the instrument hole having a major axis and a minor axis, the minor axis being closer to the mounting hole than the major axis.
[0006] Preferably, the insertion part further comprises an insertion tube, the insertion tube comprising a first tube portion and a second tube portion connected to each other, the second tube portion being mounted in the instrument hole.
[0007] Preferably, the first tube portion is cylindrical, and the second tube portion has the same cross-sectional area as the first tube portion.
[0008] Preferably, the insertion part further comprises an endoscope outer tube, and the insertion tube is at least partially embedded in the endoscope outer tube.
[0009] Preferably, the tip head further comprises a tail portion, the tail portion being fixedly connected to the end portion of the endoscope outer tube, and the tail portion is at least partially accommodated in the end portion.
[0010] Preferably, a mounting key is arranged on the tail portion, and a groove is arranged on the end portion, and the mounting key is clamped in the groove.
[0011] Preferably, the insertion portion further comprises a sensor assembly, and the sensor assembly comprises a circuit board, and the tip head is provided with a receiving groove, and the circuit board is fixed in the receiving groove.
[0012] Compared with the prior art, the endoscope insertion portion has the following advantages:
[0013] 1. By arranging the elliptical instrument hole, the diameter of the endoscope outer tube is reduced without reducing the perfusion liquid flow, so that the stimulation and damage of the endoscope to the cavity, tissue and organ during use are reduced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 Fig. 1 is a perspective view of an insertion portion of an endoscope;
[0015] Figure 2 Fig. 2 is a C-C sectional view of the endoscope insertion portion; Figure 1
[0016] Figure 3 Fig. 4 is a perspective view of a tip head;
[0017] Figure 4 Fig. 5 is another perspective view of the tip head;
[0018] Figure 5 Fig. 6 is a side view of the tip head.
[0019] Reference numerals in the drawings: 10, insertion portion; 1, tip head; 11, mounting hole; 12, instrument hole; a, long axis; b, short axis; 13, receiving groove; 14, tail portion; 141, mounting key; 15, head portion; 17, outer wall; 2, sensor assembly; 21, image acquisition sensor; 22, circuit board; 23, signal transmission line; 4, insertion tube; 41, instrument channel; 42, first tube portion; 43, second tube portion; 431, cross section; 5, endoscope outer tube; 51, end portion; 511, groove; L, distance. DETAILED DESCRIPTION
[0020] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0021] like Figure 1 and Figure 2 As shown, this utility model discloses an insertion part of an endoscope. The insertion part 10 includes a tip 1, a sensor assembly 2, an insertion tube 4, and an endoscope outer tube 5. The sensor assembly 2 includes an image acquisition sensor 21, a circuit board 22, and a transmission signal line 23. The image acquisition sensor 21 is fixedly connected to the tip 1, and the insertion tube 4 and the endoscope outer tube 5 are both fixedly connected to the tip 1. In use, the insertion part 10 of the endoscope can enter the human body through a natural body cavity entrance (such as the mouth, nasal cavity, rectum, etc.) or a surgical incision to view the condition of internal organs, tissues, or cavities. The image acquisition sensor 21 fixed on the tip 1 captures images or videos of the internal organs and tissues of the human body.
[0022] like Figure 3 and Figure 4 As shown, the tip 1 is a housing, manufactured using a one-piece molding process. The tip 1 includes a head 15 and a tail 14 connected to each other, with the head 15 being cylindrical. The image acquisition sensor 21 is fixedly connected to the head 15. The head 15 has a mounting hole 11 that penetrates through the head 15, and the image acquisition sensor 21 is installed in the mounting hole 11. The head 15 also has a receiving groove 13 that communicates with the mounting hole 11. The circuit board 22 is fixed in the receiving groove 13 and is fixedly connected to the image acquisition sensor 21. The fixing connection method can be screw connection, welding, snap-fit connection, etc.
[0023] In addition, further reference Figure 5The tip 1 also has an instrument hole 12 located below the mounting hole 11. The instrument hole 12 is elliptical in shape, with a major axis a and a minor axis b. The minor axis b is closer to the mounting hole 11 than the major axis a. The instrument hole 12 is used to drain the infused fluid. The infused fluid enters the human body through the instrument channel 41 of the insertion tube 4 via the instrument hole 12. The infused fluid flushes and cleans the examination area, improving the quality of endoscopic imaging and obtaining a clearer field of view. At the same time, external instruments (such as biopsy forceps, foreign body forceps, scissors, etc.) enter the human body through the instrument channel 41 via the instrument hole 12. Figure 2 As shown, the insertion tube 4 includes a first tube section 42 and a second tube section 43 connected to each other, with the same cross-sectional area. The first tube section 42 is cylindrical with a circular cross-section, while the second tube section 43 has an elliptical cross-section 431. The second tube section 43 is installed in the instrument port 12, and the shapes of the two tube sections match each other. During infusion, the liquid enters the first tube section 42 and then the second tube section 43. By changing the cross-section 431 of the second tube section 43 to an elliptical shape without changing the effective cross-sectional area of the first tube section 42, the distance H between the outer wall 17 of the tip 1 and the minor axis b of the cross-section of the second tube section 43 can be effectively increased, thus reducing the outer diameter of the entire tip 1 and consequently reducing the diameter of the endoscope outer tube 5. That is, the diameter of the endoscope outer tube 5 is reduced without changing the infusion fluid flow rate, thereby reducing the stimulation and damage to human organs and tissues during use of the endoscope and reducing the discomfort of the observed patient. The insertion tube 4 has a simple structure, is easy to manufacture, and has low manufacturing cost.
[0024] like Figure 1 and Figure 3 As shown, the end 51 of the endoscope outer tube 5 is fixedly connected to the tail 14, and at least part of the tail 14 is housed in the end 51. A mounting key 141 protrudes from the tail 14, and a groove 511 is formed on the end 51. The shape and size of the groove 511 match the shape of the mounting key 141, and the mounting key 141 is engaged in the groove 511. Preferably, in this embodiment, there is one mounting key 141 and one groove 511. Figure 2 As shown, the insertion tube 4 is at least partially embedded in the outer tube 5 of the endoscope, and the transmission signal line 23 is disposed between the insertion tube 4 and the outer tube 5 of the endoscope. The image acquisition sensor 21 is responsible for converting optical signals into electrical signals. Preferably, in this embodiment, a CMOS (Complementary Metal-Oxide-Semiconductor) sensor is used, which has lower power consumption, smaller size, and faster frame rate. The circuit board 22 is electrically connected to the image acquisition sensor 21 to receive the electrical signals emitted by the image acquisition sensor 21. The circuit board 22 is connected to an external display device (not shown) via the transmission signal line 23 to observe the transmitted images or videos, thereby assisting medical professionals in making accurate diagnoses and treatments.
[0025] As Figure 5 shown, since the distance L between the short axis b and the mounting hole 11 has a certain range, which is 2-5mm, after the shape of the instrument hole 12 is changed to an ellipse, the distance H between the short axis b of the ellipse and the outer wall 17 of the tip head 1 is obviously larger than the distance between the diameter of the existing circular instrument hole 12 and the outer wall 17 of the tip head 1, so the required diameter of the tip head 1 is obviously smaller than the diameter of the tip head 1 required by the cross section being circular, and the reduced tip head 1 does not affect the normal installation of the second pipe part 43, and the cross section of the second pipe part 43 is consistent with the cross section area of the first pipe part 42, and the flow of the liquid filled in the insertion pipe 4 does not change. At the same time, since the outer diameter of the tip head 1 is reduced, the outer diameter of the endoscope outer tube 5 matched with the tip head 1 is also reduced, so that the shape of the instrument hole 12 is changed to an ellipse to reduce the diameter of the tip head 1 and the diameter of the endoscope outer tube 5, and the stimulation and damage of the endoscope to the cavity, tissue and organs during use are reduced.
[0026] The above-mentioned embodiments only express several embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.
Claims
1. An insertion portion of an endoscope, the insertion portion (10) comprising a tip (1), the head (15) of the tip (1) having a mounting hole (11) for mounting an image acquisition sensor (21) and an instrument port (12) for discharging perfusion fluid, characterized in that, The instrument hole (12) is located below the mounting hole (11) and is elliptical.
2. The insertion portion of the endoscope according to claim 1, characterized in that, The insertion part (10) further includes an insertion tube (4), which includes a first tube (42) and a second tube (43) connected to each other, and the second tube (43) is installed in the instrument hole (12).
3. The insertion portion of the endoscope according to claim 2, characterized in that, The first tube (42) is cylindrical, and the second tube (43) has the same cross-sectional area as the first tube (42).
4. The insertion portion of the endoscope according to claim 2, characterized in that, The insertion part (10) also includes an endoscope outer tube (5), and the insertion tube (4) is at least partially embedded in the endoscope outer tube (5).
5. The insertion portion of the endoscope according to claim 4, characterized in that, The tip (1) also includes a tail (14), which is fixedly connected to the end (51) of the endoscope tube (5), and the tail (14) is at least partially housed in the end (51).
6. The insertion portion of the endoscope according to claim 5, characterized in that, The tail (14) is provided with a mounting key (141), and the end (51) is provided with a groove (511), and the mounting key (141) is engaged in the groove (511).
7. The insertion portion of the endoscope according to claim 1, characterized in that, The insertion part (10) further includes a sensor assembly (2), which includes a circuit board (22). The tip (1) has a receiving groove (13), and the circuit board (22) is fixed in the receiving groove (13).