Ultrasound-photoacoustic composite laparoscope and ultrasound-photoacoustic imaging system

Abstract

The utility model provides an ultrasonic-photoacoustic composite laparoscope and an ultrasonic-photoacoustic imaging system. The ultrasound-photoacoustic composite laparoscope comprises an insertion part and a head end part, the head end part is connected to the far end of the insertion part, the ultrasound-photoacoustic composite laparoscope further comprises a light guide part, the light guide part is located outside the insertion part, and the far end of the light guide part is connected to the head end part. According to the ultrasonic-photoacoustic composite laparoscope, ultrasonic imaging, photoacoustic imaging and ultrasonic-photoacoustic imaging can be achieved, and therefore large-depth high-resolution, high-contrast and high-sensitivity structural imaging and functional imaging of an organizational body can be achieved, and the accuracy rate of in-vivo diagnosis is greatly improved. According to the ultrasound-photoacoustic composite laparoscope, the light guide part is externally connected to the insertion part, and the overall dimension of the insertion part can be smaller, so that the space utilization rate of the insertion part can be higher, and the effect of the ultrasound-photoacoustic composite laparoscope used for minimally invasive surgery is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, specifically, relate to a kind of ultrasonic-optical acoustic composite laparoscope and ultrasonic-optical acoustic imaging system. BACKGROUND

[0002] Compared with traditional open surgery, laparoscopic surgery has the advantages of small wound, less blood loss and rapid recovery, and has been widely used in surgical treatment.

[0003] Some of the existing laparoscopes integrate optical acoustic imaging components in the ultrasonic probe to enable the laparoscope to realize multiple imaging modes. However, the optical acoustic imaging component needs to be connected to the optical acoustic excitation light source through a light guide, and the existing laparoscope sets the light guide inside the insertion part, resulting in an excessively large size of the insertion part. SUMMARY

[0004] To at least partially solve the problems existing in the prior art, according to one aspect of the present utility model, an ultrasonic-optical acoustic composite laparoscope is provided. The ultrasonic-optical acoustic composite laparoscope includes an insertion part and a head end part connected to the distal end of the insertion part. The ultrasonic-optical acoustic composite laparoscope also includes a light guide located outside the insertion part and having a distal end connected to the head end part.

[0005] The ultrasonic-optical acoustic composite laparoscope provided by the present utility model can realize ultrasonic, optical acoustic and ultrasonic-optical acoustic imaging, thereby realizing high-resolution, high-contrast and high-sensitivity structural and functional imaging of tissues at a large depth, greatly improving the accuracy of in-vivo diagnosis. In such an ultrasonic-optical acoustic composite laparoscope, the light guide is externally connected to the insertion part, the size of the insertion part can be smaller, and the space utilization of the insertion part can be higher, thereby achieving better results for minimally invasive surgery.

[0006] Exemplarily, a first fixing member is provided on the outer side of the insertion part, and a fixing through hole is provided on the first fixing member, through which the light guide passes.

[0007] Exemplarily, the fixing through hole gradually moves away from the insertion part from the distal end to the proximal end.

[0008] Exemplarily, the first fixing member is annularly sleeved on the insertion part, the first fixing member has a first face at the distal end and a second face at the proximal end, and the fixing through hole passes through from the first face to the second face.

[0009] Exemplarily, the first fixing member includes a first connecting part and a second connecting part. Along the circumferential direction of the insertion part, the first connecting part has a first end and a second end, the second connecting part has a third end and a fourth end, the first end is rotationally connected to the fourth end, and the second end is detachably connected to the third end, so that the first fixing member is annularly sleeved on the insertion part.

[0010] For example, a guide tube is provided on the second surface, which is connected to the proximal end of the fixed through hole. The light guide passes through the guide tube and the fixed through hole in sequence, wherein the guide tube gradually moves away from the insertion part from the distal end to the proximal end.

[0011] For example, the first fastener is provided with a threaded hole, and the fastener passes through the threaded hole and abuts against the insertion part to limit the first fastener.

[0012] For example, the insertion part is provided with a protrusion for positioning the first fastener, the protrusion protruding outward in the circumferential direction on the insertion part.

[0013] For example, the ultrasound-photoacoustic composite laparoscopy includes an operating part, the distal end of which is connected to the proximal end of the insertion part. A second fixing member is provided on the operating part, and a guide groove is provided on the second fixing member. At least a portion of the light guide member is located in the guide groove.

[0014] For example, the guide groove gradually moves away from the operating part from the distal end to the proximal end.

[0015] For example, a first fixing member is provided on the outer side of the proximal end of the insertion part, and a fixing through hole is provided on the first fixing member, through which the light guide passes, and a second fixing member is provided at the distal end of the operation part.

[0016] For example, the head end includes an ultrasonic probe and a photoacoustic excitation assembly detachably connected to the ultrasonic probe, with a light guide connected to the photoacoustic excitation assembly.

[0017] According to another aspect of the present invention, an ultrasound-photoacoustic imaging system is provided. The ultrasound-photoacoustic imaging system includes an ultrasound-photoacoustic main unit, a photoacoustic excitation light source, and any of the ultrasound-photoacoustic composite laparoscopes described above. The ultrasound-photoacoustic main unit is connected to the photoacoustic excitation light source, and the photoacoustic excitation light source is connected to the head end via a light guide. The ultrasound-photoacoustic composite laparoscope includes an operating part connected to the proximal end of the insertion portion. The ultrasound-photoacoustic main unit is connected to the operating part via an ultrasound connector.

[0018] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0019] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0021] Figure 1 This is a schematic diagram of an ultrasound-photoacoustic imaging system according to an exemplary embodiment of the present invention;

[0022] Figure 2 This is a partial magnified view of an ultrasound-photoacoustic composite laparoscopy according to an exemplary embodiment of the present invention;

[0023] Figure 3 This is a perspective view of an ultrasound-photoacoustic composite laparoscopy according to an exemplary embodiment of the present invention;

[0024] Figure 4 for Figure 3 A magnified view of a portion of the ultrasound-photoacoustic combined laparoscopy procedure shown.

[0025] Figure 5 for Figure 4 The image shows a magnified view of a portion of the ultrasound-photoacoustic combined laparoscopy procedure; and

[0026] Figure 6 for Figure 5 The image shows a partial exploded view of an ultrasound-photoacoustic combined laparoscopy system.

[0027] The above figures include the following reference numerals:

[0028] 100. Ultrasonic-photoacoustic composite laparoscope; 101. Head end; 102. Insertion part; 103. Operating part; 104. Light guide; 105. Ultrasonic connector; 110. First fixing member; 111. Fixing through hole; 112. First surface; 113. Second surface; 1131. Guide tube; 114. Third surface; 115. First connecting part; 1151. First end; 1152. Second end; 116. Second connecting part; 117. Threaded hole; 1161. Third end; 1162. Fourth end; 120. Second fixing member; 121. Guide groove; 130. Protrusion; 200. Ultrasonic-photoacoustic main unit; 300. Photoacoustic excitation light source; 400. Fastener. Detailed Implementation

[0029] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0030] According to one aspect of this invention, an ultrasound-photoacoustic hybrid laparoscopy is provided. This laparoscopy can have a variety of imaging modes, supporting ultrasound imaging, photoacoustic imaging, and ultrasound-photoacoustic fusion imaging, which helps improve the accuracy of disease diagnosis. The ultrasound-photoacoustic hybrid laparoscopy can be applied to any suitable imaging system, including but not limited to ultrasound-photoacoustic imaging systems. Therefore, according to another aspect of this invention, an ultrasound-photoacoustic imaging system is provided.

[0031] For ease of description, the distal end mentioned below refers to the end of the ultrasound-photoacoustic laparoscopy that is closer to the object being observed when the operator is using the ultrasound-photoacoustic laparoscopy; the proximal end mentioned below refers to the end of the ultrasound-photoacoustic laparoscopy that is closer to the operator when the operator is using the ultrasound-photoacoustic laparoscopy.

[0032] See Figure 1The ultrasound-photoacoustic imaging system may include an ultrasound-photoacoustic main unit 200, a photoacoustic excitation light source 300, and any of the ultrasound-photoacoustic composite laparoscopes 100 described below. The ultrasound-photoacoustic composite laparoscope 100 may include a tip 101, an insertion part 102, and an operating part 103. The insertion part 102 may be connected between the tip 101 and the operating part 103, and the insertion part 102 and the tip 101 may be inserted into the body of the object to be observed. The ultrasound-photoacoustic composite laparoscope 100 may also include a light guide 104, the distal end of which may be connected to the tip 101. The ultrasound-photoacoustic main unit 200 may be connected to the photoacoustic excitation light source 300, and the photoacoustic excitation light source 300 may be connected to the tip 101 via the light guide 104. The operating part 103 may be equipped with a smart button. By controlling the operating part 103, a signal can be sent to the ultrasound-photoacoustic main unit 200, thereby controlling the activation of the photoacoustic excitation light source 300. The photoacoustic excitation source 300 can emit photoacoustic excitation light. The photoacoustic excitation source 300 can be a pulsed laser source, or a pulse-modulated light-emitting diode (LED) or laser diode (LD), or any other suitable form. The photoacoustic excitation light emitted by the photoacoustic excitation source 300 can be transmitted to the head end 101 via the light guide 104. The head end 101 can include an interconnected photoacoustic excitation assembly and an ultrasonic probe. The photoacoustic excitation assembly can irradiate the biological tissue with the photoacoustic excitation light. The biological tissue absorbs the light energy and undergoes thermal expansion. During the pulse intervals of the photoacoustic excitation light, it releases energy and contracts, generating high-frequency ultrasound waves during this thermal expansion and contraction process. The ultrasound-photoacoustic host 200 can be connected to the operating unit 103 via the ultrasonic connector 105. The ultrasonic probe can be connected to the distal end of the insertion part 102. An ultrasonic transducer can be installed inside the ultrasonic probe, which can emit and receive ultrasonic signals. An ultrasonic transducer receives ultrasound waves generated by biological tissue under the action of photoacoustic excitation light. The generated ultrasound signal is transmitted to the ultrasonic-photoacoustic host 200 to achieve photoacoustic imaging. Additionally, the ultrasonic-photoacoustic host 200 can generate ultrasound pulse signals, which can be transmitted to the ultrasonic transducer via the ultrasonic connector 105. The ultrasonic transducer then generates ultrasound waves, which, upon reaching the biological tissue, produce ultrasound echoes. The ultrasonic transducer receives these echoes and transmits signals to the ultrasonic-photoacoustic host 200, thereby achieving ultrasound imaging. Based on this, by controlling the emission sequence of the photoacoustic excitation light and the ultrasound pulse signals, ultrasound imaging and photoacoustic imaging can be performed alternately at preset time intervals, achieving ultrasound-photoacoustic fusion imaging. The preferred time interval is 1μs-100μs, a time interval imperceptible to the human eye, eliminating motion artifacts, and visually allowing ultrasound and photoacoustic imaging to be perceived as simultaneous.This ultrasound-photoacoustic composite laparoscopy 100 uses photoacoustic imaging to supplement ultrasound imaging, resulting in better overall imaging performance. It can achieve high-resolution, high-contrast, and high-sensitivity structural and functional imaging of biological tissues at greater depths.

[0033] The light guide 104 may include an optical fiber and an optical fiber protective sheath. The optical fiber protective sheath may be fitted over and surround the optical fiber to protect it. The optical fiber protective sheath may be waterproof and washable. The light guide 104 may be located outside the insertion portion 102, and the distal end of the light guide 104 may be connected to the head end 101. The light guide 104 may be connected to the outside of the insertion portion 102 in various suitable forms and located outside the insertion portion 102.

[0034] The ultrasound-photoacoustic hybrid laparoscopy 100 provided by this invention can realize ultrasound, photoacoustic, and ultrasound-photoacoustic imaging, thereby achieving high-resolution, high-contrast, and high-sensitivity structural and functional imaging of tissues at greater depths, greatly improving the accuracy of in vivo diagnosis. In this ultrasound-photoacoustic hybrid laparoscopy 100, the light guide 104 is externally connected to the insertion part 102, and the external dimensions of the insertion part 102 can be smaller, thus improving the space utilization of the insertion part 102 and making it more effective for minimally invasive surgery.

[0035] In one embodiment of this utility model, see Figure 2A first fixing member 110 may be provided on the outer side of the insertion part 102. The first fixing member 110 may be an arc-shaped member, an annular member, or any other suitable form. A fixing through hole 111 may be provided on the first fixing member 110, through which the light guide member 104 passes. The fixing through hole 111 may have a diameter matching the outer diameter of the light guide member 104. The first fixing member 110 can position and fix the light guide member 104, thereby reducing interference between the light guide member 104 and the outside, and ensuring that the position of the light guide member 104 is relatively fixed, making the overall device more stable. The first fixing member 110 may be connected to the insertion part 102 by adhesive bonding, snap-fit, threaded connection, or any other suitable form. It is understandable that for the first fixing member 110 connected to the insertion part 102 in a form that is not easily disassembled, such as adhesive bonding, the connection between the light guide 104 and the insertion part 102 can be disassembled by breaking the first fixing member 110. For the first fixing member 110 connected to the insertion part 102 in a form that is easily disassembled, such as snap-fit, threaded connection, or abutment, the connection between the first fixing member 110 and the insertion part 102 can be directly disassembled. Therefore, the light guide 104 externally connected to the insertion part 102 can be considered detachable. The distal end of the light guide 104 can be connected to the photoacoustic excitation component in a suitable form, such as snap-fit ​​or threaded connection. After disassembling the connection between the light guide 104 and the insertion part 102, the connection between the distal end of the light guide 104 and the photoacoustic excitation component can be disassembled, thus completing the overall disassembly of the light guide 104. For light guides 104 whose distal ends are connected to photoacoustic excitation components by means of bonding or other methods, the connection between light guides 104 and photoacoustic excitation components can be broken to disassemble light guides 104. Alternatively, in some embodiments, photoacoustic excitation components can be detachably connected to ultrasonic probes. In this case, the connection between photoacoustic excitation components and ultrasonic probes can be disassembled, and then the connection between light guides 104 and insertion parts 102 can be disassembled to complete the disassembly of the photoacoustic excitation components and light guides 104 as a whole.

[0036] For example, the fixing through hole 111 can gradually move away from the insertion portion 102 from the distal end to the proximal end. The axis of the fixing through hole 111 can be inclined relative to the axis of the insertion portion 102 (the CC axis in the figure). The light guide 104 passes through the fixing through hole 111. Therefore, the fixing through hole 111, which gradually moves away from the insertion portion 102 from the distal end to the proximal end, can make the portion of the light guide 104 passing through the fixing through hole 111 tend to move away from the insertion portion 102 from the distal end to the proximal end. In this way, the proximal end of the light guide 104 can avoid the operation portion 103, thereby preventing the light guide 104 from interfering with the operation.

[0037] In one embodiment of this utility model, see Figure 2The ultrasound-photoacoustic composite laparoscopy 100 may include an operating part 103, the distal end of which may be connected to the proximal end of the insertion part 102. A second fixing member 120 may be provided on the operating part 103, and a guide groove 121 may be provided on the second fixing member 120. At least a portion of the light guide member 104 may be located within the guide groove 121. The guide groove 121 can position and fix the light guide member 104, thereby reducing interference between the light guide member 104 and the outside environment. Furthermore, the relatively fixed position of the light guide member 104 makes the overall device more stable. In an embodiment where a first fixing member 110 is provided on the insertion part 102 and a second fixing member 120 is provided on the operation part 103, at least a portion of the light guide 104 can be located within the guide groove 121, based on the light guide 104 passing through the fixing through hole 111. Thus, the fixing through hole 111 and the guide groove 121 together provide a positioning function for the light guide 104, making the ultrasound-photoacoustic composite laparoscope 100 more stable during use.

[0038] For example, see Figure 2 The guide groove 121 gradually moves away from the operating part 103 from its distal end to its proximal end. The axis of the guide groove 121 can be inclined relative to the axis of the operating part 103. Typically, the operating part 103 can be coaxial with the insertion part 102, that is, the axis of the operating part 103 can also be the axis CC shown in the figure. The light guide 104 passes through the guide groove 121. Therefore, the guide groove 121, which gradually moves away from the operating part 103 from its distal end to its proximal end, makes the portion of the light guide 104 passing through the guide groove 121 tend to move away from the operating part 103 from its distal end to its proximal end. In this way, the light guide 104 can avoid the operating part 103, thereby preventing the light guide 104 from interfering with the operation.

[0039] For example, see Figure 2 A first fixing member 110 may be provided on the proximal outer side of the insertion part 102. The first fixing member 110 may be provided with a fixing through hole 111 through which the light guide 104 can pass. A second fixing member 120 may be provided at the distal end of the operation part 103. Since the proximal end of the insertion part 102 is connected to the distal end of the operation part 103, the fixing through hole 111 on the first fixing member 110 allows the light guide 104 to smoothly transition to the second fixing member 120. The guide groove 121 on the second fixing member 120 further allows the light guide 104 to avoid the operation part 103. In this way, the overall wiring of the light guide 104 can be smoother, avoiding the existence of inflection points that would affect the transmission of photoacoustic excitation light in the light guide 104, and preventing damage to the light guide 104, thus extending the service life of the entire device.

[0040] See Figure 2The first fixing member 110 can be annularly sleeved on the insertion portion 102. The first fixing member 110 can have a first surface 112 at the distal end and a second surface 113 at the proximal end. As shown in the figure, the first surface 112 and the second surface 113 can be perpendicular to the axis CC of the insertion portion 102. The first fixing member 110 can also have a third surface 114 extending around the axis CC of the insertion portion 102, connecting the first surface 112 and the second surface 113. The fixing through hole 111 can extend from the first surface 112 to the third surface 114. However, such a first fixing member 110 is difficult to manufacture and has high production costs. Exemplarily, the fixing through hole 111 can extend from the first surface 112 to the second surface 113. Such a first fixing member 110 is simpler to manufacture, has lower costs, and is easier to implement.

[0041] In one embodiment of this utility model, see Figure 3 , Figure 4 , Figure 5 and Figure 6 The first fastener 110 may include a first connecting portion 115 and a second connecting portion 116. See details. Figure 6 Along the circumferential direction of the insertion portion 102, the first connecting portion 115 may have a first end 1151 and a second end 1152, and the second connecting portion 116 may have a third end 1161 and a fourth end 1162. The first end 1151 can be rotatably connected to the fourth end 1162, and the second end 1152 can be detachably connected to the third end 1161, so that the first fixing member 110 can be annularly sleeved on the insertion portion 102. The first end 1151 can be rotatably connected to the fourth end 1162 by hinge, threaded connection, or other suitable means. The second end 1152 can be detachably connected to the third end 1161 by snap-fit, threaded connection, or other suitable means. When disassembling the first fixing member 110, it is only necessary to disassemble the connection between the second end 1152 and the third end 1161. The connection between the first fixing member 110 and the insertion portion 102 is easier to disassemble, thereby making the light guide member 104 easier to disassemble.

[0042] For example, a guide tube 1131 may be provided on the second surface 113. The guide tube 1131 may be connected to the proximal end of the fixing through hole 111. The light guide 104 may pass through the guide tube 1131 and the fixing through hole 111 in sequence. The guide tube 1131 may gradually move away from the insertion part 102 from the distal end to the proximal end. The axis of the guide tube 1131 may be inclined relative to the axis CC of the insertion part 102. Since the light guide 104 passes through the guide tube 1131, the portion of the light guide 104 that passes through the guide tube 1131 tends to move away from the insertion part 102 from the distal end to the proximal end. In this way, the proximal end of the light guide 104 can avoid the operation part 103, thereby further preventing the light guide 104 from interfering with the operation. The guide tube 1131 can have a certain length, which makes the light guide 104 more effective in avoiding the operation part 103. Moreover, the guide tube 1131 with a certain length can achieve a more stable positioning of the light guide 104.

[0043] In one embodiment of this utility model, a threaded hole 117 may be provided on the first fixing member 110. The fastener 400 can pass through the threaded hole 117 and abut against the insertion part 102 to limit the first fixing member 110. The fastener 400 can be threaded to the first fixing member 110 through the threaded hole 117. After passing through the threaded hole 117, the fastener 400 can abut against the insertion part 102, thereby fixing the relative position between the first fixing member 110 and the insertion part 102 and realizing the positioning function of the first fixing member 110. In this way, the first fixing member 110 can be placed at any suitable position on the insertion part 102 as needed. The connection between the first fixing member 110 and the insertion part 102 is more stable, and the relative positional relationship is more stable, which can make the position of the light guide 104 relative to the insertion part 102 more fixed, and the overall stability of the device is better.

[0044] In one embodiment of this utility model, see Figure 6The insertion portion 102 may be provided with a protrusion 130 for positioning the first fixing member 110. The protrusion 130 protrudes outward in the circumferential direction on the insertion portion 102. The first fixing member 110 can be located at the position of the protrusion 130, which makes the installation of the first fixing member 110 simpler and more convenient. It is worth noting that the first fixing member 110 is located at the position of the protrusion 130, but it is not required that the first fixing member 110 be strictly engaged with the protrusion 130. The first fixing member 110 can be located at any position near the protrusion 130. The protrusion 130 only serves to indicate the installation position of the first fixing member 110. The protrusion 130 can also be used to indicate the tightness of the light guide member 104. The protrusion 130 protrudes outward in the circumferential direction on the insertion portion 102. The protrusion 130 can be provided at a suitable position on the insertion portion 102 so that there is a first distance between the protrusion 130 and the head end portion 101. The first fixing member 110 is disposed on the insertion part 102, thus having a second distance between it and the head end 101. The portion of the light guide 104 passing through the first fixing member 110 also has a second distance between it and the head end 101. By comparing the second distance with the first distance, the operator can be alerted to the tightness of the light guide 104. When the second distance is much greater than the first distance, the distance between the portion of the light guide 104 passing through the first fixing member 110 and the head end 101 is too far. In this case, the portion of the light guide 104 located between the first fixing member 110 and the head end 101 is constantly under tension and is in an overly taut state. When the second distance is much less than the first distance, the length of the portion of the light guide 104 located between the first fixing member 110 and the head end 101 is too long, and the light guide 104 is in an overly slack state. The protrusion 130 can indicate the tightness of the light guide 104, thereby providing a reference for the position of the first fixation member 110, avoiding damage caused by excessive tension of the light guide 104 or waste caused by excessive looseness of the light guide 104 and the impact on other operations when using ultrasound-photoacoustic composite laparoscopy.

[0045] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0046] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0048] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in sequences other than those illustrated or described herein.

[0049] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic-photoacoustic hybrid laparoscope comprising an insertion portion and a head end portion connected to a distal end of the insertion portion, characterized in that, The ultrasonic-optoacoustic composite laparoscope further comprises a light guide, the light guide is located outside the insertion part, and a distal end of the light guide is connected to the head end part.

2. The ultrasonic-photoacoustic hybrid laparoscope according to claim 1, wherein, A first fixing part is arranged outside the insertion part, and a fixing through hole is arranged on the first fixing part, and the light guide passes through the fixing through hole.

3. The ultrasonic-photoacoustic hybrid laparoscope according to claim 2, wherein, The fixing through hole gradually moves away from the insertion part from the distal end to the proximal end.

4. The ultrasonic-photoacoustic hybrid laparoscope according to claim 2, wherein, The first fixing part is annularly arranged on the insertion part, the first fixing part has a first surface at the distal end and a second surface at the proximal end, and the fixing through hole passes through from the first surface to the second surface.

5. The ultrasonic-photoacoustic hybrid laparoscope according to claim 4, wherein, The first fixing part comprises a first connecting part and a second connecting part, the first connecting part has a first end and a second end along the circumferential direction of the insertion part, the second connecting part has a third end and a fourth end, the first end is rotationally connected to the fourth end, and the second end is detachably connected to the third end, so that the first fixing part is annularly arranged on the insertion part.

6. The ultrasonic-photoacoustic hybrid laparoscope according to claim 5, wherein, A guide tube is arranged on the second surface, the guide tube is connected to the proximal end of the fixing through hole, and the light guide sequentially passes through the guide tube and the fixing through hole, wherein the guide tube gradually moves away from the insertion part from the distal end to the proximal end.

7. The ultrasonic-photoacoustic hybrid laparoscope according to claim 2, wherein, A threaded hole is arranged on the first fixing part, a fastener passes through the threaded hole and abuts against the insertion part, so as to limit the first fixing part.

8. The ultrasonic-photoacoustic hybrid laparoscope according to claim 2, wherein, A protrusion for positioning the first fixing part is arranged on the insertion part, and the protrusion protrudes outward along the circumferential direction of the insertion part.

9. The ultrasonic-photoacoustic hybrid laparoscope according to claim 1, wherein, The ultrasonic-optoacoustic composite laparoscope comprises an operation part, a distal end of the operation part is connected to a proximal end of the insertion part, a second fixing part is arranged on the operation part, a guide groove is arranged on the second fixing part, and at least part of the light guide is located in the guide groove.

10. The ultrasonic-photoacoustic hybrid laparoscope according to claim 9, wherein, The guide groove gradually moves away from the operation part from the distal end to the proximal end.

11. The ultrasonic-photoacoustic hybrid laparoscope according to claim 9, wherein, A first fixing part is arranged outside the proximal end of the insertion part, a fixing through hole is arranged on the first fixing part, the light guide passes through the fixing through hole, and the second fixing part is arranged at the distal end of the operation part.

12. The ultrasonic-photoacoustic hybrid laparoscope according to any one of claims 1 to 11, characterized in that, The head end part comprises an ultrasonic probe and an optoacoustic excitation assembly detachably connected to the ultrasonic probe, and the light guide is connected to the optoacoustic excitation assembly.

13. An ultrasound-optoacoustic imaging system, characterized by The ultrasonic-optoacoustic composite laparoscope comprises an ultrasonic-optoacoustic main machine, an optoacoustic excitation light source, and the ultrasonic-optoacoustic composite laparoscope according to any one of claims 1-12, the ultrasonic-optoacoustic main machine is connected to the optoacoustic excitation light source, the optoacoustic excitation light source is connected to the head end part through the light guide, the ultrasonic-optoacoustic composite laparoscope comprises an operation part connected to the proximal end of the insertion part, and the ultrasonic-optoacoustic main machine is connected to the operation part through an ultrasonic connector.

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